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- Author:
- Retta, A.; Wagner, L. E.; Tatarko, J.; Todd, T. C.
- Source:
- Transactions of the ASAE 2013 v.56 no.2 pp. 653
- ISSN:
- 0001-2351
- Subject:
- aboveground biomass; analysis of variance; bulk density; field experimentation; forbs; freeze-thaw cycles; grasses; ground cover plants; prediction; soil compaction; soil erosion models; soil surface layers; spring; summer; tanks; topsoil; traffic; vegetation cover; vehicles; Kansas
- Abstract:
- ... Studies were conducted using military vehicles to determine the influence of repeated traffic on soil compaction and vegetative losses. These data will eventually be incorporated into models such as the Wind Erosion Prediction System (WEPS). A replicated field experiment was conducted in the fall of 2010 on two soils that dominate the military training grounds at Fort Riley, Kansas. Treatments con ...
- Handle:
- 10113/56420
-
- Author:
- Wilson, G. V.; Nieber, J. L.; Sidle, R. C.; Fox, G. A.
- Source:
- Transactions of the ASAE 2013 v.56 no.2 pp. 465
- ISSN:
- 0001-2351
- Subject:
- Richards' equation; bank erosion; erodibility; gully erosion; macropores; mathematical models; pipes; porous media; preferential flow; shear stress; soil erosion models; subsurface flow; turbulent flow
- Abstract:
- ... Many field observations have lead to speculation on the role of piping in embankment failures, landslides, and gully erosion. However, there has not been a consensus on the subsurface flow and erosion processes involved and inconsistent use of terms have exasperated the problem. One such piping process that has experienced a lot of field observations but very limited mechanistic experimental work ...
- Handle:
- 10113/56639
-
- Author:
- Butts, C.L.; Dorner, J.W.; Brown, S.L.; Arthur, F.H.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 457
- ISSN:
- 0001-2351
- Subject:
- Arachis hypogaea; peanuts; stored products; aeration; storage conditions; ventilation systems; agricultural structures and facilities; air flow; storage temperature; spatial variation; Georgia
- Abstract:
- ... A two-year study was conducted to determine acceptable aeration strategies for farmer stock peanuts stored in conventional warehouses with and without headspace ventilation. Farmer stock peanuts were stored in 1/10th scale model warehouses with various aeration and ventilation treatments. Peanuts were loaded into each warehouse in the fall and stored for about 190 days. Peanuts stored with aeratio ...
- Handle:
- 10113/1349
-
- Author:
- Zhu, H.; Derksen, R.C.; Guler, H.; Krause, C.R.; Ozkan, H.E.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 325
- ISSN:
- 0001-2351
- Subject:
- foliar spraying; plant nurseries; air-assisted sprayers; nozzles; spray drift; Malus domestica; spray deposition; agrochemicals; droplet size; droplet studies
- Abstract:
- ... Information is lacking on spray techniques to improve deposit uniformity within nursery canopies and reduce off-target loss on the ground and via spray drift from the treated area. Spray deposits at various elevations within crabapple trees and on the ground were investigated with an air blast sprayer equipped with conventional hollow-cone nozzles, air-induction nozzles, and conventional hollow-co ...
- Handle:
- 10113/1344
-
- Author:
- Green, C.H.; Tomer, M.D.; Di Luzio, M.; Arnold, J.G.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 413
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; agricultural watersheds; tile drainage; hydrologic models; watershed hydrology; subsurface drainage; water balance; Conservation Effects Assessment Project; Iowa
- Abstract:
- ... The presence of subsurface tile drainage systems can facilitate nutrient and pesticide transport, thereby contributing to environmental pollution. The Soil and Water Assessment Tool (SWAT) water quality model is designed to assess nonpoint and point source pollution and was recently modified for tile drainage. Over 25% of the nation's cropland required improved drainage. In this study, the model's ...
- Handle:
- 10113/335
-
- Author:
- Bosch, D.D.; Sullivan, D.G.; Sheridan, J.M.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 423
- ISSN:
- 0001-2351
- Subject:
- forested watersheds; agricultural watersheds; coastal plains; watershed hydrology; land use change; precipitation; stream flow; afforestation; remote sensing; satellites; Georgia
- Abstract:
- ... Conservation programs developed and implemented by the USDA have led to land-use changes of large areas throughout the U.S. These changes in land-use may lead to changes in evapotranspiration and infiltration and subsequently to dramatic differences in hydrologic response. The impact of recent land-use changes was evaluated using observed precipitation and streamflow data from the Little River wat ...
- Handle:
- 10113/1348
-
- Author:
- Daniel, J.A.; Phillips, W.A.; Northup, B.K.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 349
- ISSN:
- 0001-2351
- Subject:
- Triticum aestivum; winter wheat; fallow; summer; legumes; grazing; cattle; crop management; agricultural runoff; sediment yield; losses from soil; soil nutrients; nitrate nitrogen; phosphorus; Oklahoma
- Abstract:
- ... The agricultural economy of the southern Great Plains relies on practices that incorporate grazed winter wheat and associated summer management practices. Information exists about the impact of these practices on water quality, but data related to runoff and associated nutrient and sediment movement due to high intensity, late summer storms in the southern Great Plains are limited. This study exam ...
- Handle:
- 10113/1345
-
- Author:
- Bracmort, K.S.; Arabi, M.; Frankenberger, J.R.; Engel, B.A.; Arnold, J.G.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 367
- ISSN:
- 0001-2351
- Subject:
- best management practices; pollution control; nonpoint source pollution; soil nutrients; water erosion; erosion control; phosphorus; sediment yield; Soil and Water Assessment Tool model; long term experiments; water quality; water pollution; streams; agricultural runoff; Indiana
- Abstract:
- ... Structural best management practices (BMPs) that reduce soil erosion and nutrient losses have been recommended and installed on agricultural land for years. A structural BMP is expected to be fully functional only for a limited period after installation, after which degradation of the BMP is likely to lead to a reduction in the water quality improvement provided by the BMP. Assessing the impact of ...
- Handle:
- 10113/1347
-
- Author:
- Stewart, G.R.; Munster, C.L.; Vietor, D.M.; Arnold, J.G.; McFarland, A.M.S.; White, R.; Provin, T.
- Source:
- Transactions of the ASAE 2006 v.49 no.2 pp. 357
- ISSN:
- 0001-2351
- Subject:
- agricultural watersheds; watersheds; best management practices; water pollution; nonpoint source pollution; phosphorus; filter strips; turf grasses; sod strips; Soil and Water Assessment Tool model; nitrogen; sediment yield; erosion control; water quality; cattle manure; harvesting; Texas
- Abstract:
- ... The Upper North Bosque River (UNBR) watershed is under a total maximum daily load (TMDL) mandate to reduce loading of soluble phosphorus (P) in impaired river segments. To address these problems, Texas A&M University researchers have developed a Best Management Practice (BMP) that removes excess nutrients from impaired watersheds through turfgrass sod. Harvest of manure-grown sod removes a thin la ...
- Handle:
- 10113/1346
-
- Author:
- Womac, A.R.; Igathinathane, C.; Sokhansanj, S.; Pordesimo, L.O.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2073
- ISSN:
- 0001-2351
- Subject:
- water content; corn stover; monitoring; field experimentation; precipitation; temporal variation; evapotranspiration; evaporation; environmental factors; biomass; storage; industrial applications; processing technology; Tennessee
- Abstract:
- ... Moisture of corn stover was field monitored under southeast U.S. ambient conditions to aid biomass collection decisions. Timing to collect stover at low moisture depended on elapsed time on field, elapsed time after precipitation, time of day, contact with soil, and conditioning effect by combine header. Grain had been combine-harvested at kernel moistures of either 25% or 15% wet basis (w.b.). St ...
- Handle:
- 10113/5537
-
- Author:
- Shelby, J.D.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2179
- ISSN:
- 0001-2351
- Subject:
- forested watersheds; agricultural watersheds; watershed hydrology; hurricanes; storms; floods; coastal plains; water flow; stream flow; water quality; losses from soil; sediment yield; nitrogen; nonpoint source pollution; phosphorus; North Carolina
- Abstract:
- ... This study evaluated hydrologic and water-quality data collected on a coastal-plain research watershed during a series of hurricanes and tropical storms that hit coastal North Carolina in 1999, including hurricanes Dennis, Floyd, and Irene. During September and October 1999, the research watershed received approximately 555 mm of rainfall associated with hurricanes. This was the wettest such perio ...
- Handle:
- 10113/5541
-
- Author:
- Yuan, Y.; Bingner, R.L.; Theurer, F.D.; Rebich, R.A.; Moore, P.A.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2145
- ISSN:
- 0001-2351
- Subject:
- nonpoint source pollution; phosphorus; losses from soil; agricultural soils; simulation models; agricultural watersheds; AGNPS model; soil nutrients; Mississippi
- Abstract:
- ... The USDA Annualized Agricultural Non-Point Source Pollution model (AnnAGNPS) has been developed to aid in evaluation of watershed response to agricultural management practices. Previous studies have demonstrated the capability of the model to simulate runoff and sediment, but not phosphorus (P). The main purpose of this article is to evaluate the performance of AnnAGNPS on P simulation using compa ...
- Handle:
- 10113/5540
-
- Author:
- Wang, X.; Youssef, M.A.; Skaggs, R.W.; Atwood, J.D.; Frankenberger, J.R.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2205
- ISSN:
- 0001-2351
- Subject:
- nitrate nitrogen; nitrogen; losses from soil; drainage water; drainage; agricultural management models; mathematical models; simulation models; sandy loam soils; agricultural soils; model validation; North Carolina
- Abstract:
- ... A two-step global sensitivity analysis was conducted for the nitrogen simulation model DRAINMOD-N II to assess the sensitivity of model predictions of NO3-N losses with drainage water to various model inputs. Factors screening using the LH-OAT (Latin hypercube sampling - one at a time) sensitivity analysis method was performed as a first step considering 48 model parameters; then a variance-based ...
- Handle:
- 10113/5542
-
- Author:
- Bosch, D.D.; Potter, T.L.; Truman, C.C.; Bednarz, C.W.; Strickland, T.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2137
- ISSN:
- 0001-2351
- Subject:
- agricultural runoff; subsurface flow; strip tillage; conservation tillage; infiltration (hydrology); water conservation; seasonal variation; coastal plain soils; sandy soils; agricultural soils; soil water balance; loamy sand soils; Georgia
- Abstract:
- ... Conservation tillage has significant potential as a water management tool for cotton production on sandy, drought-prone soils. Plant residue remaining at the soil surface from prior crops serves as a vapor barrier against water loss, reduces raindrop impact energy, slows surface runoff, and often increases infiltration. By increasing infiltration, the potential for greater plant-available water ca ...
- Handle:
- 10113/5539
-
- Author:
- Allred, B.J.; Ehsani, M.R.; Saraswat, D.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2123
- ISSN:
- 0001-2351
- Subject:
- meters (equipment); electromagnetic induction techniques; agricultural soils; electrical conductivity; air temperature; soil temperature; water table; soil water content; spatial variation; soil chemical properties; soil physical properties
- Abstract:
- ... In situ measurement of apparent soil electrical conductivity (EC(a)) is an important precision agriculture tool for determining spatial changes in the soil properties affecting soil fertility. However, dynamic temperature and shallow hydrologic conditions also influence the measured EC(a) and need to be considered. Therefore, the impact of temperature (air, soil) and shallow hydrologic conditions ...
- Handle:
- 10113/5538
-
- Author:
- Raper, R.L.; Reeves, D.W.; Shaw, J.N.; van Santen, E.; Mask, P.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.6 pp. 2047
- ISSN:
- 0001-2351
- Subject:
- Zea mays; corn; grain yield; precision agriculture; subsoiling; tillage; power requirement; Alabama
- Abstract:
- ... Subsoiling is often required to alleviate soil compaction; however, deep tillage can be expensive and time-consuming. If this tillage operation is conducted deeper than the compacted soil layer, energy is wasted. However, if this tillage operation is conducted shallower than the compacted soil layer, energy is again wasted, and plant roots may be prevented from penetrating the compacted layer. Tec ...
- Handle:
- 10113/5536
-
- Author:
- Grift, T.E.; Tekeste, M.Z.; Raper, R.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1723
- ISSN:
- 0001-2351
- Subject:
- soil compaction; penetrometers; acoustics; acoustic properties; sensors; soil penetration resistance
- Abstract:
- ... The ASAE standardized tool to detect the depth and strength of compaction layers in the field is the cone penetrometer. Since this method is point-to-point, researchers have experimented with on-the-fly alternatives that can be used as, or in combination with, a standard tillage tool. On-the-fly compaction layer sensing also enables adaptive tillage, where the soil is only tilled as deep as necess ...
- Handle:
- 10113/5524
-
- Author:
- Mizrach, A.; Hetzroni, A.; Mazor, M.; Mankin, R.W.; Ignat, T.; Grinshpun, J.; Epsky, N.D.; Shuman, D.; Heath, R.R.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 2017
- ISSN:
- 0001-2351
- Subject:
- Ceratitis capitata; insect pests; females; insect traps; acoustics; insect communication; sounds; courtship; insect control
- Abstract:
- ... Medflies (Ceratitis capitata) are among the world's most economically harmful pests. In addition, the costs of worldwide monitoring and control are expensive, exceeding $800 million per year in Israel and the U.S. alone. Efficient traps are vitally important tools for medfly quarantine and pest management activities. They are needed for control as well as early detection, for predicting dispersal ...
- Handle:
- 10113/5534
-
- Author:
- Bennedsen, B.S.; Peterson, D.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1819
- ISSN:
- 0001-2351
- Subject:
- apples; fruit quality; postharvest diseases; texture; reflectance; food storage
- Abstract:
- ... Spectral reflection in the wavebands between 600 and 1100 nm was tested for its ability to classify apples according to the presence of watercore and mealiness. A model developed by partial least squares (PLS) regression using four, 10 nm wide wavebands at 690, 700, 820, and 830 nm separated watercore and normal apples with an error of 4%. It was found that watercore could only be detected shortly ...
- Handle:
- 10113/5526
-
- Author:
- Wanjura, J.D.; Buser, M.D.; Parnell, C.B. Jr.; Shaw, B.W.; Lacey, R.E.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1919
- ISSN:
- 0001-2351
- Subject:
- cotton ginning; air pollution; particulate emissions; simulation models; mathematical models; equations; wind; dust emissions
- Abstract:
- ... Cotton gins are required to obtain operating permits from state air pollution regulatory agencies (SAPRA), which regulate the amount of particulate matter that can be emitted. Industrial Source Complex Short Term version 3 (ISCST3) is the Gaussian dispersion model currently used by some SAPRAs to predict downwind concentrations used in the regulatory process in the absence of field sampling data. ...
- Handle:
- 10113/5529
-
- Author:
- Qin, J.; Lu, R.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1963
- ISSN:
- 0001-2351
- Subject:
- Prunus cerasus; cherries; fruit products; seeds; detection; hyperspectral imagery; neural networks; food processing; color
- Abstract:
- ... The presence of pits or pit fragments in pitted cherry products poses potential hazard to consumers and thus make the food industry liable for economic losses. The objective of this research was to develop a hyperspectral imaging technique for detecting pits in tart cherries. Hyperspectral transmission images were acquired from 'Montmorency' tart cherries for four orientations over the spectral re ...
- Handle:
- 10113/5530
-
- Author:
- Pan, Z.; Thompson, J.E.; Amaratunga, K.S.P.; Anderson, T.; Zheng, X.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1865
- ISSN:
- 0001-2351
- Subject:
- rice; milling quality; cooling; yields; color; heat exchangers; temperature
- Abstract:
- ... The objective of this research was to appraise the quality of medium-grain rice as affected by cooling and two different Federal Grain Inspection Service (FGIS) milling procedures. Milled rice quality was measured in terms of total rice yield (TRY), head rice yield (HRY), and whiteness. The cooling study used an internal and an external heat exchanger developed for the McGill No. 3 mill with room- ...
- Handle:
- 10113/5527
-
- Author:
- Marrazzo, W.N.; Heinemann, P.H.; Crassweller, R.E.; Leblanc, E.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1995
- ISSN:
- 0001-2351
- Subject:
- Malus domestica; apples; cultivar identification; volatile organic compounds; odors; electronic nose; cultivars; fruit extracts; apple juice; mass spectrometry; sensors
- Abstract:
- ... The ability to analytically differentiate and match intact apple (Malus domestica, Borkh) fruit and fruit juice extracts from different apple cultivars is of interest to the food industry. This study tested the feasibility of detecting the difference among volatile gases evolved from intact 'McIntosh (Buhr),' 'Delicious,' and 'Gala' apples and their extracted juice using a prototype 32-array polym ...
- Handle:
- 10113/5532
-
- Author:
- Marrazzo, W.N.; Heinemann, P.H.; Saftner, R.A.; Crassweller, R.E.; Leblanc, E.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 2003
- ISSN:
- 0001-2351
- Subject:
- apples; fruit composition; fruit quality; flavor compounds; odors; electronic nose; sensors; gas chromatography; food analysis; volatile organic compounds; headspace analysis
- Abstract:
- ... The ability of chemical sensors to differentiate and match samples of apple flavors and essences is of interest to the flavor and food industries. This study evaluated the feasibility of using a prototype chemical sensor for the differentiation of apple flavors and essences. Volatile headspace gases from 20 flavors and four essences were measured with a gas chromatograph and the prototype chemical ...
- Handle:
- 10113/5533
-
- Author:
- Yang, C.; Greenberg, S.M.; Everitt, J.H.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1987
- ISSN:
- 0001-2351
- Subject:
- Gossypium hirsutum; cotton; pesticide application; herbicides; application timing; remote sensing; multispectral imagery; stems; regrowth; insect control; insect pests; overwintering; cultural control
- Abstract:
- ... Post-harvest destruction of cotton (Gossypium hirsutum L.) stalks is an important cultural practice for managing overwintering boll weevils (Anthonomous grandis Boheman) and other insect pests such as the silverleaf whitefly (Bemisia argentifolii Bellows and Perring) and the pink bollworm (Pectinophora gossypiella). A field experiment was conducted to examine the usefulness of remote sensing techn ...
- Handle:
- 10113/5531
-
- Author:
- Hanson, G.J.; Cook, K.R.; Hunt, S.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1783
- ISSN:
- 0001-2351
- Subject:
- hydraulic structures; water erosion; floods; dams (hydrology); physical models; mathematical models
- Abstract:
- ... The formation process and timing of a dam embankment breach caused by flood overtopping can dramatically impact the rate at which water is released from a reservoir and directly impacts the hazard to life and property downstream of a breached dam. Therefore, dam embankment erosion processes and the rate of breaching from overtopping events are important to both engineers and planners alike, who mu ...
- Handle:
- 10113/5525
-
- Author:
- Wang, S.; Monzon, M.; Gazit, Y.; Tang, J.; Mitcham, E.J.; Armstrong, J.W.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1873
- ISSN:
- 0001-2351
- Subject:
- insect pests; Anastrepha ludens; Bactrocera cucurbitae; Bactrocera dorsalis; Ceratitis capitata; fruits (food); dielectric properties; temperature; insect control; postharvest diseases; postharvest treatment; electrical conductivity; radio waves; microwave treatment; tropical and subtropical fruits
- Abstract:
- ... Knowledge of the dielectric properties of commodities and insect pests is important in developing thermal treatments for postharvest insect control based on radio frequency (RF) and microwave energy. The dielectric properties of six subtropical and tropical fruits along with four associated insect pests were measured between 1 and 1800 MHz using an open-ended coaxial-line probe technique and at te ...
- Handle:
- 10113/5528
-
- Author:
- Harmel, R.D.; King, K.W.
- Source:
- Transactions of the ASAE 2005 v.48 no.5 pp. 1713
- ISSN:
- 0001-2351
- Subject:
- agricultural watersheds; agricultural runoff; sediment yield; losses from soil; nitrate nitrogen; phosphates; nitrates; nonpoint source pollution; water pollution; measurement; water quality; sampling; storms; Texas
- Abstract:
- ... Storm water quality sampling techniques vary considerably in the resources required for sample collection and analysis, and potentially in the resulting constituent flux estimates. However, quantitative information on sampling error is rarely available for use in selecting appropriate sampling techniques and for evaluating the effects of various techniques on measured results. In an effort to quan ...
- Handle:
- 10113/5523
-
- Author:
- Lefcourt, A.M.; Kim, M.S.; Chen, Y.R.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1587
- ISSN:
- 0001-2351
- Subject:
- feces; apples; calyx; cattle; lasers; fluorescence; multispectral imagery; food contamination
- Abstract:
- ... Feces is a suspected source of contamination of apples by disease-causing organisms such as E. coli O157:H7. Laser-induced fluorescence imaging was used to detect applications of 20 microliter of 1:20 or 1:200 dilutions of dairy cow feces to the calyx of Red Delicious apples. Detection of the 1:20 dilution was 100% even after washing the apples. Detection of the 1:200 dilution was more difficult, ...
- Handle:
- 10113/5520
-
- Author:
- Yang, C.; Fernandez, C.J.; Everitt, J.H.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1619
- ISSN:
- 0001-2351
- Subject:
- Gossypium hirsutum; cotton; fungal diseases of plants; root rot; Phymatotrichopsis omnivora; remote sensing; epidemiology; disease control; harvesting; crop yield; multispectral imagery; spatial variation; fields; precision agriculture
- Abstract:
- ... Phymatotrichum root rot, caused by the fungus Phymatotrichum omnivorum, is a serious and destructive disease that significantly reduces cotton yield and lowers lint quality. Cultural practices are commonly recommended for the control of cotton root rot, and fungicides and fumigants that may suppress the disease have also been used. Because of the high costs of these chemicals, their use may be eco ...
- Handle:
- 10113/5521
-
- Author:
- Macias-Corral, M.A.; Samani, Z.A.; Hanson, A.T.; DelaVega, R.; Funk, P.A.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1521
- ISSN:
- 0001-2351
- Subject:
- cotton gin trash; cattle manure; dairy cattle; anaerobic digestion; animal manure management; methane production; biogas; soil amendments; methane; nitrogen content
- Abstract:
- ... Millions of tonnes of feedlot manure and cotton gin waste are generated in the U.S. each year. Dairy and feedlot operations in New Mexico produce 1.2 million tonnes of manure annually. Traditionally, manure has been used as a soil amendment in agriculture. However, land application of manure is limited in New Mexico due to problems with salinity, potential groundwater contamination, and limited av ...
- Handle:
- 10113/5518
-
- Author:
- Graff, C.D.; Sadeghi, A.M.; Lowrance, R.R.; Williams, R.G.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1377
- ISSN:
- 0001-2351
- Subject:
- hydrologic models; mathematical models; simulation models; watersheds; watershed hydrology; riparian buffers; nitrogen; phosphorus; nonpoint source pollution; losses from soil; nitrates; plant growth; climate change; leaf area index; rooting
- Abstract:
- ... Conservation practices, such as buffers, are often installed to mitigate the effects of nutrients and sediment runoff from agricultural practices. The Riparian Ecosystem Management Model (REMM) was developed as process-based model to evaluate the fate of nutrients and sediment through a riparian buffer up to the edge of a stream. A one-at-a-time sensitivity analysis was performed on REMM to evalua ...
- Handle:
- 10113/5515
-
- Author:
- Feng, G.; Sharratt, B.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1409
- ISSN:
- 0001-2351
- Subject:
- soil erosion models; wind erosion; agricultural soils; agricultural land; mathematical models; air quality; soil properties; Washington; Oregon
- Abstract:
- ... The Wind Erosion Prediction System (WEPS) was developed for the specific application of simulating erosion processes from agricultural lands. WEPS is a physically based model, with a moderate to large number of input parameters. Knowledge about model sensitivity is essential to both model developers and users in ascertaining those parameters most influential to modeled object functions. A combined ...
- Handle:
- 10113/5516
-
- Author:
- Vanotti, M.B.; Rice, J.M.; Ellison, A.Q.; Hunt, P.G.; Humenik, F.J.; Baird, C.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1567
- ISSN:
- 0001-2351
- Subject:
- pig manure; liquid manure; filtration; sand; polyacrylamide; flocculants; flocculation; manure handling; biochemical oxygen demand; chemical oxygen demand; nitrogen; phosphorus; dewatering
- Abstract:
- ... Small particles typical of liquid swine manure often clog sand filter beds and fine filters. We evaluated the effectiveness of polymer flocculants to improve drainage and filtration performance of sand filter beds by increasing the particle size of manure. A pilot separation unit was evaluated at the Swine Unit of the NCSU Lake Wheeler Road Laboratory in Raleigh, North Carolina, in 40 consecutive ...
- Handle:
- 10113/5519
-
- Author:
- Igathinathane, C.; Womac, A.R.; Sokhansanj, S.; Pordesimo, L.O.
- Source:
- Transactions of the ASAE 2005 v.48 no.4 pp. 1449
- ISSN:
- 0001-2351
- Subject:
- water content; corn stover; biomass; sorption isotherms; relative humidity; storage conditions; bioenergy; biofuels; leaves; stems; equations; mathematics and statistics
- Abstract:
- ... Corn stover equilibrium moisture isotherms were developed to aide biomass engineering of consistent, uniform-quality feedstock supplies for renewable bioenergy and bioproducts. Equilibrium moisture content (EMC) and equilibrium relative humidity (ERH) sorption data of corn leaf, stalk skin, and stalk pith were experimentally determined using the static gravimetric method at six temperatures rangin ...
- Handle:
- 10113/5517
-
- Author:
- Hunt, S.L.; Hanson, G.J.; Cook, K.R.; Kadavy, K.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1115
- ISSN:
- 0001-2351
- Subject:
- dams (hydrology); hydraulic structures; erodibility; water erosion; floods
- Abstract:
- ... In recent years, interest has risen in the occurrence and effects of overtopping on earth embankments due to the number of dams that have reached the end of their planned service life. The embankment failure process due to overtopping includes several aspects of erosion: failure of the vegetation, concentrated flow, headcut migration, and breach timing, formation, and widening. Research using larg ...
- Handle:
- 10113/5511
-
- Author:
- Funk, P.A.; Armijo, C.B.; Hanson, A.T.; Samani, Z.A.; Macias-Corral, M.A.; Smith, G.B.; Riordan, J.T.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1197
- ISSN:
- 0001-2351
- Subject:
- cattle manure; dairy cattle; cotton gin trash; waste treatment; anaerobic digestion; methane production; temperature; chemical oxygen demand
- Abstract:
- ... Alternatives to gin trash and manure disposal would benefit both the cotton ginning and dairy industries. Anaerobic digestion produces both methane gas and a class A soil amendment. Gin and dairy wastes were combined in the solid phase portion of a two-phase anaerobic system to determine the combinations of temperature, rewetting interval, and mixture ratio that maximize potential methane gas prod ...
- Handle:
- 10113/5514
-
- Author:
- Du, B.; Arnold, J.G.; Saleh, A.; Jaynes, D.B.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1121
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; watershed hydrology; hydrologic models; subsurface flow; tile drainage; water table; algorithms; mathematical models; simulation models; equations; Iowa
- Abstract:
- ... SWAT (Soil and Water Assessment Tool) is a watershed model that has been incorporated into USEPA's modeling framework called BASINS used for total maximum daily load (TMDL) analysis. It is thus important that SWAT realistically simulate tile flow and pothole landscapes that are common in much of the Corn Belt and Great Lakes states. In this study, SWAT was modified to simulate water table dynamics ...
- Handle:
- 10113/43595
-
- Author:
- Narasimhan, B.; Srinivasan, R.; Arnold, J.G.; Di Luzio, M.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1101
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; soil water content; soil water; temporal variation; spatial variation; stream flow; watershed hydrology; watersheds; evapotranspiration; remote sensing; Texas
- Abstract:
- ... Soil moisture is an important hydrologic variable that controls various land surface processes. In spite of its importance to agriculture and drought monitoring, soil moisture information is not widely available on a regional scale. However, long-term soil moisture information is essential for agricultural drought monitoring and crop yield prediction. The hydrologic model Soil and Water Assessment ...
- Handle:
- 10113/5510
-
- Author:
- Covert, S.A.; Robichaud, P.R.; Elliot, W.J.; Link, T.E.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1091
- ISSN:
- 0001-2351
- Subject:
- Water Erosion Prediction Project; water erosion; forest soils; forested watersheds; logging; prescribed burning; runoff; mathematical models; equations; subsurface flow; infiltration (hydrology); slope; simulation models; Idaho; Montana
- Abstract:
- ... This study evaluates runoff predictions generated by GeoWEPP (Geo-spatial interface to the Water Erosion Prediction Project) and a modified version of WEPP v98.4 for forest soils. Three small (2 to 9 ha) watersheds in the mountains of the interior Northwest were monitored for several years following timber harvest and prescribed fires. Observed climate variables, percent ground cover, soil erodibi ...
- Handle:
- 10113/5509
-
- Author:
- Roodsari, R.M.; Shelton, D.R.; Shirmohammadi, A.; Pachepsky, Y.A.; Sadeghi, A.M.; Starr, J.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1055
- ISSN:
- 0001-2351
- Subject:
- coliform bacteria; overland flow; infiltration (hydrology); nonpoint source pollution; filter strips; sandy loam soils; lysimeters; pollution control; agricultural runoff; cattle manure; manure spreading; slope
- Abstract:
- ... Land application of manure is recommended to recycle organic matter and nutrients, thus enhancing the soil quality and crop productivity. However, pathogens in manure may pose a human health risk if they reach potable or recreational water resources. The objective of this study was to observe and quantify the effects of vegetated filter strips (VFS) on surface and vertical transport of fecal colif ...
- Handle:
- 10113/5508
-
- Author:
- Helmers, M.J.; Eisenhauer, D.E.; Dosskey, M.G.; Franti, T.G.; Brothers, J.M.; McCullough, M.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 955
- ISSN:
- 0001-2351
- Subject:
- filter strips; agricultural runoff; overland flow; sheet erosion; erosion control; water erosion; sediment yield; soil conservation; Nebraska
- Abstract:
- ... Vegetative filters (VF) are a best management practice installed in many areas to control sediment movement to water bodies. It is commonly assumed that runoff proceeds perpendicularly across a VF as sheet flow. However, there is little research information on natural pathways of water movement and performance of field-scale VF. The objectives of this study were: (1) to quantify the performance of ...
- Handle:
- 10113/5504
-
- Author:
- Fritz, B.K.; Shaw, B.W.; Parnell, C.B. Jr.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1185
- ISSN:
- 0001-2351
- Subject:
- air pollution; pollutants; spatial distribution; mathematical models; wind speed
- Abstract:
- ... The air pollution regulatory process involves the permitting of sources of regulated pollutants. This process requires sources to demonstrate that the National Ambient Air Quality Standards (NAAQS) are not exceeded as a result of released pollutants. A determination of a facility's compliance with the NAAQS is more frequently being based on dispersion modeling estimates rather than ambient air sam ...
- Handle:
- 10113/5513
-
- Author:
- Van Liew, M.W.; Arnold, J.G.; Bosch, D.D.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1025
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; model validation; calibration; watershed hydrology; optimization; stream flow; hydrologic data; watersheds; Georgia; Oklahoma
- Abstract:
- ... An investigation was conducted to evaluate strengths and limitations of manual calibration and the existing autocalibration tool in the watershed-scale model referred to as the Soil and Water Assessment Tool (SWAT). Performance of the model was tested on the Little River Experimental Watershed in Georgia and the Little Washita River Experimental Watershed in Oklahoma, both USDA-ARS watersheds. A l ...
- Handle:
- 10113/5506
-
- Author:
- Teske, M.E.; Thistle, H.W.; Hewitt, A.J.; Kirk, I.W.; Dexter, R.W.; Ghent, J.H.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 917
- ISSN:
- 0001-2351
- Subject:
- atomizers; atomization; spraying; droplet size; Bacillus thuringiensis; bacterial insecticides; pesticide application; regression analysis
- Abstract:
- ... Wind tunnel measurements of drop size distributions from Micronair AU4000 and AU5000 rotary atomizers were collected to develop a database for model use. The measurements varied tank mix, flow rate, air speed, and blade angle conditions, which were correlated by multiple regressions (average R2 = 0.995 for AU4000 and 0.988 for AU5000). This database replaces an outdated set of rotary atomizer data ...
- Handle:
- 10113/5503
-
- Author:
- Wang, X.; He, X.; Williams, J.R.; Izaurralde, R.C.; Atwood, J.D.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1041
- ISSN:
- 0001-2351
- Subject:
- agricultural management models; Zea mays; corn; grain yield; soil organic matter; agricultural soils; prediction; estimation; continuous cropping; fertilizer application; nitrogen fertilizers; silt loam soils; Wisconsin
- Abstract:
- ... Modeling biophysical processes is a complex endeavor because of large data requirements and uncertainty in model parameters. Model predictions should incorporate, when possible, analyses of their uncertainty and sensitivity. The study incorporated uncertainty analysis on EPIC (Environmental Policy Impact Calculator) predictions of corn (Zea mays L.) yield and soil organic carbon (SOC) using genera ...
- Handle:
- 10113/5507
-
- Author:
- Irmak, S.; Howell, T.A.; Allen, R.G.; Payero, J.O.; Martin, D.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 1063
- ISSN:
- 0001-2351
- Subject:
- evapotranspiration; equations; grasses; simulation models; mathematical models; meteorological parameters; diurnal variation; climatic zones; Florida; Texas; Nebraska; California
- Abstract:
- ... The standardized ASCE Penman-Monteith (ASCE-PM) model was used to estimate grass-reference evapotranspiration (ET(o)) over a range of climates at seven locations based on hourly and 24 h weather data. Hourly ET(o) computations were summed over 24 h periods and reported as sum-of-hourly (SOH). The SOH ASCE-PM ET(o) values (ET(o,h,ASCE)) were compared with the 24 h timestep ASCE-PM ET(o) values (ET( ...
- Handle:
- 10113/2192
-
- Author:
- Johnson, C.K.; Eigenberg, R.A.; Doran, J.W.; Wienhold, B.J.; Eghball, B.; Woodbury, B.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.3 pp. 979
- ISSN:
- 0001-2351
- Subject:
- electrical resistance; soil properties; electrical conductivity; electromagnetic induction techniques; Triticum aestivum; winter wheat; grain yield; field experimentation; sensors; precision agriculture; sustained yield management; nitrogen; mineralization; soil fertility; nitrate nitrogen; manure spreading; cattle manure; ammonium nitrogen
- Abstract:
- ... Practical tools are needed to identify and advance sustainable management practices to optimize economic return, conserve soil, and minimize negative off-site environmental effects. The objective of this article is to review current research in non-saline soils of the central U.S. to consider bulk soil electrical conductivity (EC(a)) as an assessment tool for: (1) tracking N dynamics, (2) identify ...
- Handle:
- 10113/5505
-
- Author:
- Brazee, R.D.; Miller, E.S.; Reding, M.E.; Klein, M.G.; Nudd, B.; Zhu, H.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 831
- ISSN:
- 0001-2351
- Subject:
- Otiorhynchus sulcatus; insect pests; insect behavior; transponders; radar; locomotion; field experimentation
- Abstract:
- ... The black vine weevil (BVW), Otiorhynchus sulcatus (Fabricius), is a major economic insect pest for growers of ornamental nursery crops and small fruits. Development of management strategies by entomologists and growers has been hampered by a lack of behavioral information on movement of BVW within agroecosystems. Although insects can be tracked using tag-and-release methods, the BVW is active pri ...
- Handle:
- 10113/5501
-
- Author:
- Adamsen, F.J.; Hunsaker, D.J.; Perea, H.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 529
- ISSN:
- 0001-2351
- Subject:
- border irrigation; basin irrigation; fertigation; nitrogen fertilizers; bromides; nitrates; spatial distribution; sandy soils; irrigated farming; Phoenix dactylifera; computer analysis; simulation models; surface irrigation; California
- Abstract:
- ... Fertigation using surface irrigation is a cost-effective and simple method of applying fertilizer across the field. The primary objective of this study was to compare different strategies for timing injection of bromide and its fate when injected into the irrigation water, as a surrogate for nitrate, during the irrigation of narrow sloping border strips. A fertigation experiment was conducted on s ...
- Handle:
- 10113/5490
-
- Author:
- Igathinathane, C.; Chattopadhyay, P.K.; Pordesimo, L.O.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 665
- ISSN:
- 0001-2351
- Subject:
- rice; parboiling; soaking; water; absorption; hot water treatment; rice starch; gelatinization; food processing
- Abstract:
- ... Soaking of rough rice is the most time-consuming operation in the parboiling process. A combination soaking procedure for parboiling of rough rice was developed based on the gelatinization temperature of rice starch to achieve rapid completion of soaking. The objectives of this study were to determine the gelatinization temperature of rice starch, the soaking characteristics of the rough rice, and ...
- Handle:
- 10113/5496
-
- Author:
- Veith, T.L.; Sharpley, A.N.; Weld, J.L.; Gburek, W.J.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 557
- ISSN:
- 0001-2351
- Subject:
- phosphorus; losses from soil; agricultural soils; agricultural land; nonpoint source pollution; fields; risk assessment; Soil and Water Assessment Tool model; watersheds; agricultural watersheds; Pennsylvania
- Abstract:
- ... Nonpoint-source losses of agricultural phosphorus (P) at field and watershed scales must be quantified to facilitate selection and placement of P control measures. Quantification of P loss has been pursued through field monitoring, simulation models, and risk assessment indices. However, the intended users of these methods differ, impacting each method's functional design and ease-of-use. For exam ...
- Handle:
- 10113/5492
-
- Author:
- van Donk, S.J.; Wagner, L.E.; Skidmore, E.L.; Tatarko, J.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 503
- ISSN:
- 0001-2351
- Subject:
- Weibull statistics; wind speed; wind erosion; stochastic processes; soil erosion models; computer analysis; mathematical models; simulation models
- Abstract:
- ... Wind is the principal driver of the Wind Erosion Prediction System (WEPS), which is a process-based computer model for the simulation of wind-blown sediment loss from a field. WEPS generates wind using a stochastic wind generator. The objectives of this study were to improve the stochastic generation of wind speed and direction and to update the wind statistics used by the generator with statistic ...
- Handle:
- 10113/5488
-
- Author:
- Wang, L.; Parnell, C.B.; Shaw, B.W.; Lacey, R.E.; Buser, M.D.; Goodrich, L.B.; Capareda, S.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 749
- ISSN:
- 0001-2351
- Subject:
- particulate emissions; air pollution; agriculture; sampling; particle size distribution; pollutants; equipment performance
- Abstract:
- ... The Federal Reference Method (FRM) ambient PM10 sampler does not always measure the true PM10 concentration. There are inherent sampling errors associated with the PM10 samplers due to the interaction of particle size distribution (PSD) and sampler performance characteristics. These sampling errors, which are the relative differences between theoretical estimation of the sampler concentration and ...
- Handle:
- 10113/5499
-
- Author:
- Hall, H.E.; Raper, R.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 469
- ISSN:
- 0001-2351
- Subject:
- soil strength; soil compaction; penetrometers; soil penetration resistance; sandy loam soils; sensors; soil profiles; agricultural soils; bulk density; soil water content
- Abstract:
- ... Root-restricting soil layers reduce crop yields in the southeastern U.S. almost every year due to temporary periods of drought. Subsoiling beneath these layers is an annual practice for most farmers in this region as a method of removing this barrier and improving rooting conditions. Currently, farmers could use a soil cone penetrometer to determine the depth of their root-restrictive layer in a f ...
- Handle:
- 10113/5487
-
- Author:
- Fernandez, G.P.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 639
- ISSN:
- 0001-2351
- Subject:
- poorly drained soils; subsurface drainage; hydrologic models; simulation models; mathematical models; forested watersheds; water quality; streams; coastal plain soils; nitrate nitrogen; water pollution; pollution load; North Carolina
- Abstract:
- ... Two watershed-scale hydrology and water quality models were used to evaluate the cumulative impacts of land use and management practices on downstream hydrology and nitrogen loading of poorly drained watersheds. Field-scale hydrology and nutrient dynamics are predicted by DRAINMOD in both models. In the first model (DRAINMOD-DUFLOW), field-scale predictions are coupled to the canal/stream routing ...
- Handle:
- 10113/37520
-
- Author:
- Field, J.P.; Farrish, K.W.; Oswald, B.P.; Romig, M.T.; Carter, E.A.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 861
- ISSN:
- 0001-2351
- Subject:
- site preparation; afforestation; forest plantations; Pinus taeda; herbicides; pesticide application; tillage; prescribed burning; forest soils; soil fertility; nutrient content; losses from soil; water erosion; clearcutting; Texas
- Abstract:
- ... Site preparation practices are frequently utilized in Southern pine ecosystems to facilitate planting and seedling establishment. Soil and nutrient losses were monitored in 12 bordered erosion plots following four site preparation treatments in a clearcut harvested loblolly pine (Pinus taeda L.) forest in east Texas. Three replications of four site preparation treatments were used: (1) chemical he ...
- Handle:
- 10113/5502
-
- Author:
- Zhang, X.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 567
- ISSN:
- 0001-2351
- Subject:
- climate models; simulation models; storms; rain; water erosion; prediction; Water Erosion Prediction Project; runoff; sediment yield; mathematical models
- Abstract:
- ... CLIGEN is the only weather generator that generates internal storm patterns, which are required by many agricultural system models such as the Water Erosion Prediction Project (WEPP) model. The lack of correlation between CLIGEN-generated storm variables may limit those models' abilities to predict surface runoff and soil erosion. The objectives of this study were to: (1) test a distribution-free ...
- Handle:
- 10113/5493
-
- Author:
- Thomasson, J.A.; Shearer, S.A.; Boykin, D.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 439
- ISSN:
- 0001-2351
- Subject:
- meters (equipment); lint cotton; seed cotton; fiber quality; color; measurement; measuring devices; cotton gin trash; image analysis; sensors
- Abstract:
- ... An experimental cotton color/trash meter was developed previously for the purpose of improving cotton color measurement by removing trash-particle effects on color measurement with image processing. In this work, the experimental meter was tested extensively on a large number of cotton samples varying widely in color and trash content. Testing involved: (1) comparing the measurement accuracy of th ...
- Handle:
- 10113/5486
-
- Author:
- Thomasson, J.A.; Shearer, S.A.; Byler, R.K.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 421
- ISSN:
- 0001-2351
- Subject:
- meters (equipment); lint cotton; seed cotton; fiber quality; color; measurement; measuring devices; cotton gin trash; image analysis; image processors; sensors; computer software
- Abstract:
- ... Trash particles enmeshed in bulk cotton fiber samples interfere with conventional cotton color measurement accuracy. A new instrument was designed and constructed for reducing trash effects on cotton color measurement, while maintaining the traditional system of cotton color measurement. The instrument's illumination system included four quartz-tungsten-halogenlamps in aluminum elliptical reflecto ...
- Handle:
- 10113/5485
-
- Author:
- Helmers, M.J.; Eisenhauer, D.E.; Franti, T.G.; Dosskey, M.G.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 541
- ISSN:
- 0001-2351
- Subject:
- overland flow; filter strips; erosion control; sediment deposition; hydrologic models; agricultural land; soil erosion models; Nebraska
- Abstract:
- ... Vegetative filters (VF) are used to remove sediment and other pollutants from overland flow. When modeling the hydrology of VF, it is often assumed that overland flow is planar, but our research indicates that it can be two-dimensional with converging and diverging pathways. Our hypothesis is that flow convergence will negatively influence the sediment trapping capability of VF. The objectives wer ...
- Handle:
- 10113/5491
-
- Author:
- Kandala, C.V.K.; Nelson, S.O.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 715
- ISSN:
- 0001-2351
- Subject:
- water content; peanuts; sampling; capacitance; impedance; nondestructive methods; food analysis
- Abstract:
- ... By using the measured RF impedance values of a parallel-plate system, with a single peanut kernel between the plates in an empirical equation, it was found in previous work that the moisture content of the peanut kernel could be closely estimated. This method was successfully applied to predict the moisture content of small samples of peanut kernels (6 to 8 kernels) but with a slightly modified em ...
- Handle:
- 10113/5498
-
- Author:
- Payero, J.O.; Neale, C.M.U.; Wright, J.L.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 653
- ISSN:
- 0001-2351
- Subject:
- Medicago sativa; alfalfa; Festuca arundinacea; water stress; irrigation scheduling; canopy; temperature; air temperature; thermometers; equations; Idaho
- Abstract:
- ... The lack of transferability of the Crop Water Stress Index (CWSI) baselines, together with the restriction of having to make required measurements close to noon and under clear-sky conditions, are major drawbacks that restrict the use of the empirical CWSI method for irrigation scheduling. The objectives of this study were to: (1) evaluate the effect of solar radiation (R(s)) on the non-water-stre ...
- Handle:
- 10113/5495
-
- Author:
- Zhang, G.H.; Nearing, M.A.; Liu, B.Y.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 511
- ISSN:
- 0001-2351
- Subject:
- rain; water erosion; precipitation; climate change; sediment yield; losses from soil; General Circulation Models; China
- Abstract:
- ... Severe soil erosion in the Yellow River basin is a significant obstruction to the sustainable management of soil and water resources. Any changes in soil erosion will have great effects on long-term planning of soil and water conservation in such a severely eroded basin. Rainfall erosivity describes the soil loss potential caused by rain, which can be expected to change in correspondence to change ...
- Handle:
- 10113/5489
-
- Author:
- Chinkuyu, A.; Meixner, T.; Gish, T.; Daughtry, C.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 585
- ISSN:
- 0001-2351
- Subject:
- agricultural land; fields; nonpoint source pollution; losses from soil; prediction; GLEAMS model; Root Zone Water Quality Model; herbicide residues; atrazine; metolachlor; agricultural runoff; seepage; Maryland
- Abstract:
- ... Seepage zones have been shown to be of critical importance in controlling contaminant export from agricultural watersheds. To date, no multipurpose agricultural water quality model has seepage zones incorporated into its process-level representations. We chose to test two widely used models of agricultural water quality, the Groundwater Loading Effects of Agricultural Management Systems (GLEAMS) a ...
- Handle:
- 10113/5494
-
- Author:
- Parker, D.B.; Pandrangi, S.; Greene, L.W.; Almas, L.K.; Cole, N.A.; Rhoades, M.B.; Koziel, J.A.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 787
- ISSN:
- 0001-2351
- Subject:
- beef cattle; concentrated animal feeding operations; cattle manure; ammonia; gas emissions; odor emissions; urease inhibitors; odor control; application rate
- Abstract:
- ... Reduction of ammonia emissions from animal feeding operations is important from the perspective of environmental policy and its impact on agriculture. A laboratory study was conducted to evaluate how rate and frequency of urease inhibitor application affect ammonia emissions from simulated beef cattle feedyard manure surfaces. The urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) was appl ...
- Handle:
- 10113/5500
-
- Author:
- Garcia, R.A.; Flores, R.A.; Phillips, J.G.
- Source:
- Transactions of the ASAE 2005 v.48 no.2 pp. 703
- ISSN:
- 0001-2351
- Subject:
- meat and bone meal; aspirators; separation; ash; animal source protein; industrial applications
- Abstract:
- ... Meat and bone meal (MBM) is a byproduct of the rendering industry. Novel feed and non-feed applications for the protein and minerals in MBM are being developed. MBM would have improved characteristics for these applications if the bone and soft tissue-derived particles could be efficiently separated. An aspirator is a device that separates mixtures of particles based on the terminal velocity of ea ...
- Handle:
- 10113/5497
-
- Author:
- Santhi, C.; Muttiah, R.S.; Arnold, J.G.; Srinivasan, R.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 137
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; irrigation requirement; irrigated farming; geographic information systems; simulation models; hydrologic models; water conservation; irrigation management; production costs
- Abstract:
- ... Regional planning for irrigated agriculture requires a thorough understanding of the hydrological processes and spatial and temporal variations associated with hydrological factors such as rainfall, soils, and crops grown in different units of the region. The objective of this study was to improve the capabilities of a basin-scale hydrologic simulation model for regional planning of irrigated agri ...
- Handle:
- 10113/5474
-
- Author:
- Ramalingam, N.; Ling, P.P.; Derksen, R.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 375
- ISSN:
- 0001-2351
- Subject:
- plants; Impatiens; spraying; leaves; reflectance; multispectral imagery; water; remote sensing; sensors; greenhouse production
- Abstract:
- ... The feasibility of using a multispectral imaging sensor for non-contact leaf wetness sensing was evaluated. The changes of spectral reflectance in the visible (400-700 nm), very-near-infrared (700-1300 nm) and near-infrared ranges (1300-2500 nm) caused by leaf surface moisture were investigated under filtered tungsten halogen lighting. The spectral information collected using the imaging system wa ...
- Handle:
- 10113/5483
-
- Author:
- Starr, G.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 205
- ISSN:
- 0001-2351
- Subject:
- sediment yield; runoff; water erosion; time domain reflectometry; stream channels; rangelands; watersheds; watershed hydrology; probes (equipment); sensors; dielectric properties; Arizona
- Abstract:
- ... Sediment concentration measurement in high-concentration runoff waters is highly problematic. A novel device was developed for high-concentration measurements. This device was then used to measure sediment concentrations during monsoon runoff events at the USDA-ARS Walnut Gulch experimental watershed in southeast Arizona as an example application. Data were obtained using a 55 cm, three-prong, emb ...
- Handle:
- 10113/5477
-
- Author:
- Brabec, D.; Maghirang, R.; Casada, M.; Haque, E.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 331
- ISSN:
- 0001-2351
- Subject:
- grain dust; dust control; spraying; nozzles; droplets; fogs (materials); water; fluid mechanics; computer software
- Abstract:
- ... Grain dust, a health and safety risk, is generated whenever grain is loaded into or unloaded from hoppers and equipment. This research investigated airflow models and evaluated the particle dynamics from a high-pressure water-fogging system for potential dust control at a grain-receiving hopper. Experiments were performed in a test chamber, representing a narrow section of a grain-receiving hopper ...
- Handle:
- 10113/5482
-
- Author:
- Farahani, H.J.; Buchleiter, G.W.; Brodahl, M.K.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 155
- ISSN:
- 0001-2351
- Subject:
- irrigated soils; sandy soils; soil salinity; electrical conductivity; electrical resistance; soil water content; clay fraction; cation exchange capacity; soil organic matter; soil heterogeneity; Colorado
- Abstract:
- ... Recent advances in apparent soil electrical conductivity (EC(a)) sensor technology have provided the opportunity to rapidly map soil spatial variability for site-specific management. However, characterizing (or identifying the causes of) the EC(a) variability has remained difficult, with EC(a) and soil property (such as soil water and clay content) relationships showing a wide range of varying str ...
- Handle:
- 10113/5476
-
- Author:
- Kim, H.; McConnell, L.L.; Millner, P.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 315
- ISSN:
- 0001-2351
- Subject:
- composts; food residuals composts; composted manure; yard waste composts; biosolids composts; odors; volatile organic compounds; solid phase extraction; microextraction; butyric acid; carbon disulfide; organic sulfur compounds; propionic acid; trimethylamine; compost quality; indicator species; Escherichia coli; coliform bacteria; Enterococcus
- Abstract:
- ... In this study, odorous volatile compounds (OVCs) from market-ready, commercial composts supplied by 14 different producers were compared using a recently developed method involving solid-phase microextraction (SPME) of headspace volatiles followed by GC analysis. The products analyzed were derived from a cross-section of the wide array of compost feedstock ingredients used in the U.S. (e.g., bioso ...
- Handle:
- 10113/5481
-
- Author:
- Cochrane, B.H.W.; Reichert, J.M.; Eltz, F.L.F.; Norton, L.D.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 149
- ISSN:
- 0001-2351
- Subject:
- water erosion; erosion control; agricultural runoff; polyacrylamide; phosphogypsum; soil amendments; infiltration (hydrology); soil surface sealing; tropical soils; soil crusts; sandy soils; Alfisols; rain; rainfall simulation; Brazil
- Abstract:
- ... Sandy soil, prone to intense soil erosion, is used for agriculture in the subtropics of Brazil. This study was conducted to determine whether soil amendments are effective for conserving topsoil by preventing water-induced erosion on a Brazilian sandy Alfisol soil (coarse-loamy, mixed, thermic Typic Paleudalf). A programmable rainfall simulator was used at the experimental station of the Federal U ...
- Handle:
- 10113/5475
-
- Author:
- Wang, N.; Zhang, N.; Dowell, F.E.; Pearson, T.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 219
- ISSN:
- 0001-2351
- Subject:
- durum wheat; automatic detection; optical properties; reflectance; transmittance; image analysis; product grading; food grades
- Abstract:
- ... Digital imaging technology has found many applications in the grain industry. In this study, images of durum wheat kernels acquired under three illumination conditions (reflected, side-transmitted, and transmitted) were used to develop artificial neural network models to classify durum wheat kernels by their vitreousness. The results showed that the models trained using transmitted images provided ...
- Handle:
- 10113/5478
-
- Author:
- Enciso, J.M.; Colaizzi, P.D.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 197
- ISSN:
- 0001-2351
- Subject:
- Gossypium hirsutum; cotton; irrigated farming; subsurface irrigation; microirrigation; crop yield; seeds; lint cotton; costs and returns; cost benefit analysis; spatial distribution; furrows
- Abstract:
- ... Cotton lint yield, seed mass, fiber quality parameters, gross return, and net return were compared for subsurface drip irrigation (SDI) lateral spacing and installation depth in a clay loam soil in western Texas for three seasons. Drip laterals were spaced either in alternate furrows (2 m) or beneath every planted bed (1 m), and installation depths were either 0.2 or 0.3 m beneath the soil surface ...
- Handle:
- 10113/2190
-
- Author:
- Cochrane, T.A.; Flanagan, D.C.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 109
- ISSN:
- 0001-2351
- Subject:
- digital elevation models; Water Erosion Prediction Project; hydrologic models; agricultural runoff; water erosion; geographic information systems; watershed hydrology; models; agricultural watersheds; slope; Iowa; Georgia; Mississippi
- Abstract:
- ... Erosion prediction utilizing digital elevation models (DEMs) is a logical advancement for automating the simulation process for models such as the Water Erosion Prediction Project (WEPP). The effects of using different DEM resolutions on watershed simulations and the ability to accurately predict sediment yield and runoff from different rainfall event sizes were studied using three application met ...
- Handle:
- 10113/5472
-
- Author:
- Peng, Y.; Lu, R.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 235
- ISSN:
- 0001-2351
- Subject:
- apples; raw fruit; fruit quality; firmness; multispectral imagery; nondestructive methods; near-infrared reflectance spectroscopy; light scattering; mathematical models; equations; product grading; prediction
- Abstract:
- ... Nondestructive measurement of fruit firmness would allow the fruit industry to deliver superior, consistent fruit to the marketplace and ensure consumer acceptance and satisfaction. The objective of this research was to develop mathematical models to describe the relationship between fruit firmness and multispectral scattering profiles from apples. Scattering images were acquired from Red Deliciou ...
- Handle:
- 10113/5479
-
- Author:
- Rausch, K.D.; Belyea, R.L.; Ellersieck, M.R.; Singh, V.; Johnston, D.B.; Tumbleson, M.E.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 273
- ISSN:
- 0001-2351
- Subject:
- distillers grains; corn; particle size distribution; grinding; alcoholic fermentation; ethanol production
- Abstract:
- ... Ethanol production has increased in the past decade as a result of growth in the dry grind industry. In the dry grind process, the first step is grinding of corn. The particle size of the resulting ground corn can affect the fermentation process and the particle size of dried distillers' grains with solubles (DDGS), a coproduct of dry grind processing. Few data are available that characterize part ...
- Handle:
- 10113/5480
-
- Author:
- Akbar, M.A.; Kenimer, A.L.; Searcy, S.W.; Torbert, H.A.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 129
- ISSN:
- 0001-2351
- Subject:
- soil water content; soil analysis; electrical conductivity; electromagnetic induction techniques; Vertisols; estimation; Texas
- Abstract:
- ... Two published salinity models (designated the Rhoades and Mualem-Friedman models, respectively) were examined for application to real-time soil water estimation using apparent soil electrical conductivity. Field data were collected at two sites representing a range of soil types in central Texas: high shrinking-swelling Vertisols in Temple (the Heiden Clay site) and clay loam soils at the Texas A& ...
- Handle:
- 10113/5473
-
- Author:
- Hoffmann, W.C.; Kirk, I.W.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 5
- ISSN:
- 0001-2351
- Subject:
- spraying; sprayers; nozzles; spray deposition; spray coverage; spray drift; aerial application
- Abstract:
- ... The labels of many crop protection and production materials include specific directions for application, such as "apply as a MEDIUM spray." Therefore, aerial applicators are utilizing computer models and printed materials to comply with these labels. The objective of this study was to determine spray deposition and drift from two "medium" nozzles used in an aerial application. With an application ...
- Handle:
- 10113/5470
-
- Author:
- Fife, J.P.; Ozkan, H.E.; Derksen, R.C.; Grewal, P.S.; Krause, C.R.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 45
- ISSN:
- 0001-2351
- Subject:
- entomopathogenic nematodes; Heterorhabditis bacteriophora; Heterorhabditis megidis; Steinernema carpocapsae; Steinernema glaseri; mortality; spraying; nozzles; mechanical stress; fluid mechanics; biological control agents; insect control; biological control; mathematical models; simulation models
- Abstract:
- ... Exposure to hydrodynamic stresses during flow through a hydraulic nozzle can cause permanent damage to biological pesticides during spray application. Aqueous suspensions of a benchmark biological pest control agent, entomopathogenic nematodes (EPNs), were passed through three different hydraulic nozzles (standard flat fan, Spraying Systems XR8001VS; hollow cone, Spraying Systems TXA8001VK; and fu ...
- Handle:
- 10113/5471
-
- Author:
- Reinemann, D.J.; Stetson, L.E.; Laughlin, N.E.; LeMire, S.D.
- Source:
- Transactions of the ASAE 2005 v.48 no.1 pp. 385
- ISSN:
- 0001-2351
- Subject:
- dairy cattle; dairy cows; stray voltage; electric current; feed intake; drinking; water; milk production
- Abstract:
- ... A study was conducted to determine the level of 60 Hz transient current, relative to the short-term response threshold, required to affect feed and water intake, milk production, and cow behavior. Long-term exposure levels were set relative to the sensitivity of individual animals to short-duration exposure to take into account the wide range of sensitivities among cows. The groups were monitored ...
- Handle:
- 10113/5484
-
- Author:
- Trabelsi, S.; Nelson, S.O.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 1999
- ISSN:
- 0001-2351
- Subject:
- water content; corn; soybeans; wheat; nondestructive methods; bulk density; sensors; microwave radiation; dielectric properties; calibration
- Abstract:
- ... The principles of a nondestructive multiparameter microwave sensor operating at a single frequency are presented. Two calibration methods are reviewed and compared for simultaneous, independent determination of bulk density and moisture content in granular materials. The first calibration method is based on measurement of attenuation and phase shift through a layer of material in free space. The a ...
- Handle:
- 10113/9732
-
- Author:
- Gitau, M.W.; Veith, T.L.; Gburek, W.J.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 1923
- ISSN:
- 0001-2351
- Subject:
- best management practices; Soil and Water Assessment Tool model; nonpoint source pollution; algorithms; pollution control; agricultural runoff; pollutants; agricultural land; agricultural watersheds; phosphorus; phosphorus fertilizers; water pollution; fertilizer application; New York
- Abstract:
- ... With best management practices (BMPs) being used increasingly to control agricultural pollutant losses to surface waters, establishing the environmental effectiveness of these practices has become important. Additionally, cost implications of establishing and maintaining environmentally effective BMPs are often a crucial factor in selecting and adopting BMPs. This article considers both water qual ...
- Handle:
- 10113/9729
-
- Author:
- Rains, G.C.; Tomberlin, J.K.; D'Alessandro, M.; Lewis, W.J.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 2145
- ISSN:
- 0001-2351
- Subject:
- Microplitis croceipes; parasitoids; volatile organic compounds; electronic nose; insect behavior; smell; myrcene; putrescine; cadaverine; bioassays; searching behavior; antennating
- Abstract:
- ... Volatile chemical signals are used by many animals to find food, mates, or hosts. While the keen sense of smell of dogs has been used for centuries, other animals have not been significantly utilized. Recent studies have indicated that many insect species have the ability to learn volatile chemical compounds in association with food or other resources. These insects present a novel approach to vol ...
- Handle:
- 10113/9734
-
- Author:
- Zhu, H.; Krause, C.R.; Derksen, R.C.; Brazee, R.D.; Zondag, R.; Fausey, N.R.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 1973
- ISSN:
- 0001-2351
- Subject:
- forest nurseries; container-grown plants; pot culture; plant containers; drainage water; Acer rubrum; microirrigation; irrigation scheduling; irrigation requirement
- Abstract:
- ... In pot-in-pot nursery production, information on the amount of drainage water loss from the pots due to irrigation and rainfall is beneficial to improving irrigation water use efficiency and optimizing nutrition management. An experimental field site was established to determine drainage water loss from pot-in-pot container nurseries with micro-irrigation. The site consisted of 50 container-grown ...
- Handle:
- 10113/9731
-
- Author:
- Jackson, E.; Delwiche, M.; Barak, J.; Charkowski, A.; Suslow, T.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 2137
- ISSN:
- 0001-2351
- Subject:
- sprouts (food); Salmonella enterica; bacterial contamination; water; polymerase chain reaction; Medicago sativa; vegetables; food pathogens; biosensors; automation; food processing
- Abstract:
- ... Salmonella has been associated with a number of recent outbreaks of foodborne illness involving sprouted seeds. In this research, we addressed the design of sensor components intended for use in a fully automated detection system. A real-time PCR assay was developed to detect Salmonella in sprout irrigation water. Specific detection was achieved by targeting a region of the invasion gene, invA. Th ...
- Handle:
- 10113/9733
-
- Author:
- Raper, R.L.; Sharma, A.K.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 1899
- ISSN:
- 0001-2351
- Subject:
- sandy loam soils; coastal plain soils; soil water content; subsoiling; soil compaction; power requirement; minimum tillage
- Abstract:
- ... An experiment was conducted to determine the optimum moisture content to subsoil based on tillage forces and soil disruption. Two different shanks, a straight shank and a "minimum-tillage" shank, were tested in a Coastal Plain soil in the soil bins of the National Soil Dynamics Laboratory in Auburn, Alabama. A three-dimensional dynamometer measured tillage forces, and a laser profilometer measured ...
- Handle:
- 10113/9728
-
- Author:
- Hubbard, R.K.; Gascho, G.J.; Newton, G.L.
- Source:
- Transactions of the ASAE 2004 v.47 no.6 pp. 1963
- ISSN:
- 0001-2351
- Subject:
- waste lagoons; pig manure; biological treatment; aquatic plants; nutrient uptake; wastewater; Typha latifolia; Juncus effusus; Panicum hemitomon; nitrogen; phosphorus; potassium
- Abstract:
- ... Methods are needed to remove nutrients contained within wastewater lagoons. Potential exists for nutrient removal directly from lagoons if vegetation can be grown on floating mats in the lagoon and periodically harvested and removed. Vegetative cover of lagoons may also help reduce odor problems. A study was conducted to determine the feasibility of using floating mats of vegetation on swine lagoo ...
- Handle:
- 10113/9730
-
- Author:
- Shuman, D.; Larson, R.G.; Epsky, N.D.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1857
- ISSN:
- 0001-2351
- Subject:
- storage insects; Cryptolestes pusillus; Oryzaephilus surinamensis; Tribolium castaneum; Sitophilus oryzae; monitoring; sensors; bins; stored products; food grains; feed grains
- Abstract:
- ... A system is described for automated monitoring of pest insects in stored products. It provides quantitative data indicative of the species of detected insects and is self-calibrating to maintain reliable operation across adverse external conditions, including environmental, biological, and aging. The system employs grain probes with infrared beam optoelectronic sensor units, each having a dedicate ...
- Handle:
- 10113/9725
-
- Author:
- Colaizzi, P.D.; Schneider, A.D.; Evett, S.R.; Howell, T.A.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1477
- ISSN:
- 0001-2351
- Subject:
- Sorghum bicolor; grain sorghum; microirrigation; subsurface irrigation; sprinkler irrigation; precision agriculture; crop production; irrigated farming; grain yield; yield components; water use efficiency; irrigation requirement; Texas
- Abstract:
- ... Subsurface drip irrigation (SDI), low-energy precision application (LEPA), and spray irrigation can be very efficient by minimizing water losses, but relative performance may vary for different irrigation system capacities, soils, crops, and climates. A three-year study was conducted at Bushland, Texas, in the Southern High Plains to compare SDI, LEPA, and spray irrigation for grain sorghum on a s ...
- Handle:
- 10113/2186
-
- Author:
- King, K.W.; Harmel, R.D.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1457
- ISSN:
- 0001-2351
- Subject:
- Cynodon dactylon; runoff; ammonium nitrogen; nitrate nitrogen; nitrates; water quality; monitoring; temporal variation; nonpoint source pollution; pollution load; sward; laboratory techniques
- Abstract:
- ... Water quality loadings are generally calculated without knowledge of the relationship of the calculated loads to the total loads. A laboratory runoff study was designed and conducted to compare total loads with loads calculated from time-based sampling strategies. Total loads were measured by capturing all the runoff from 2.2 m2 Bermuda grass (Cynodon dactylon L. Pers.) sod plots with 5% slope and ...
- Handle:
- 10113/9716
-
- Author:
- Novak, J.M.; Watts, D.W.; Stone, K.C.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1513
- ISSN:
- 0001-2351
- Subject:
- pig manure; manure spreading; long term experiments; effluents; soil pollution; copper; zinc; soil profiles; nutrient uptake; Cynodon dactylon; nutrient availability; soil fertility; topsoil; leaching; coastal plain soils; North Carolina
- Abstract:
- ... Trace metals like copper (Cu) and zinc (Zn) are added to animal feed as dietary supplements, and trace metals not assimilated by the animals gut are excreted in manure. The accumulation and movement of Cu and Zn in soils has not been as well documented when compared to nitrogen (N) and phosphorus (P). In cases where plant-available Cu and Zn concentrations accumulate to phytotoxic levels, yield ma ...
- Handle:
- 10113/9718
-
- Author:
- Veith, T.L.; Wolfe, M.L.; Heatwole, C.D.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1585
- ISSN:
- 0001-2351
- Subject:
- best management practices; agricultural watersheds; pollution control; nonpoint source pollution; algorithms; cost effectiveness; watershed management; sediment yield; water erosion; geographic information systems; agricultural land; cost benefit analysis; Virginia
- Abstract:
- ... Cost-effectiveness of nonpoint-source pollution reduction programs in an agricultural watershed depends on the selection and placement of control measures within the watershed. Locations for best management practices (BMPs) are commonly identified through targeting strategies that define locations for BMP implementation based on specific criteria uniformly applied across the watershed. The goal of ...
- Handle:
- 10113/9722
-
- Author:
- Kim, I.; Kim, M.S.; Chen, Y.R.; Kong, S.G.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1785
- ISSN:
- 0001-2351
- Subject:
- chicken carcasses; chicken skin; neoplasms; image analysis; fluorescence; meat inspection; carcass condemnation; slaughterhouses
- Abstract:
- ... This article presents a method for detecting skin tumors on chicken carcasses using hyperspectral fluorescence imaging data, which provide fluorescence information in both spectral and spatial dimensions. Since these two kinds of information are complementary to each other, it is necessary to exploit them in a synergistic manner. Chicken carcasses are examined first using spectral information, and ...
- Handle:
- 10113/9724
-
- Author:
- Dabney, S.M.; Shields, F.D. Jr.; Temple, D.M.; Langendoen, E.J.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1561
- ISSN:
- 0001-2351
- Subject:
- gully erosion; erosion control; Panicum virgatum; planting; soil stabilization; Mississippi; Oklahoma
- Abstract:
- ... Concentrated flow can cause gully formation on sloping lands and in riparian zones of floodplains adjacent to incising stream channels. Current practice for riparian gully control involves blocking the gully with an earthen embankment and installing a pipe outlet. Measures involving native vegetation would be more attractive for habitat recovery and economic reasons. To test the hypothesis that sw ...
- Handle:
- 10113/9720
-
- Author:
- Bosch, D.D.; Sheridan, J.M.; Batten, H.L.; Arnold, J.G.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1493
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; agricultural watersheds; coastal plains; stream flow; watershed hydrology; Georgia
- Abstract:
- ... The Better Assessment Science Integrating point and Nonpoint Sources (BASINS) system was developed by the U.S. Environmental Protection Agency to facilitate developing total maximum daily loads (TMDLs). The Soil Water Assessment Tool (SWAT) is one of the watershed-scale simulation models within BASINS. Because of the critical nature of the TMDL process, it is imperative that BASINS and SWAT be ade ...
- Handle:
- 10113/9717
-
- Author:
- Chu, T.W.; Shirmohammadi, A.; Montas, H.; Sadeghi, A.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1523
- ISSN:
- 0001-2351
- Subject:
- Soil and Water Assessment Tool model; water quality; agricultural watersheds; nonpoint source pollution; sediment yield; water erosion; nutrients; runoff; piedmont; piedmont soils; watershed hydrology; stream flow; phosphorus; nitrate nitrogen; Maryland
- Abstract:
- ... Mathematical watershed-scale models are among the best tools available for analyzing water resources (quantity and quality) issues in spatially diverse watersheds since continuous water quality monitoring is expensive and spatially impractical in mixed land use watersheds. However, models without appropriate validation may lead to misconceptions and erroneous predictions. This study used six years ...
- Handle:
- 10113/9719
-
- Author:
- Gates, R.S.; Casey, K.D.; Xin, H.; Wheeler, E.F.; Simmons, J.D.
- Source:
- Transactions of the ASAE 2004 v.47 no.5 pp. 1709
- ISSN:
- 0001-2351
- Subject:
- fans; air flow; poultry housing; animal housing; equipment design; dust emissions; gas emissions; instrumentation
- Abstract:
- ... A device for in-situ fan airflow measurement, known as the Fan Assessment Numeration System (FANS) device, previously developed and constructed at the USDA-ARS Southern Poultry Research Laboratory, was refined at University of Kentucky as part of a project for quantifying building emissions from mechanically ventilated poultry and livestock facilities. The FANS incorporates an array of five propel ...
- Handle:
- 10113/9723
-