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You searched for: Journal name Transactions of the ASAE Remove constraint Journal name: Transactions of the ASAE
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1. Evaluation of bulk density and vegetation as affected by military vehicle traffic at Fort Riley, Kansas

Author:
A. Retta; L. E. Wagner; J. Tatarko; T. C. Todd
Source:
Transactions of the ASAE 2013 v.56 no.2 pp. 653-665
ISSN:
0001-2351
Subject:
grasses; analysis of variance; soil surface layers; aboveground biomass; bulk density; freeze-thaw cycles; spring; vegetation cover; soil erosion models; topsoil; ground cover plants; soil compaction; summer; field experimentation; tanks; traffic; forbs; prediction; 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

2. Internal erosion during soil pipeflow: State of the science for experimental and numerical analysis

Author:
G. V. Wilson; J. L. Nieber; R. C. Sidle; G. A. Fox
Source:
Transactions of the ASAE 2013 v.56 no.2 pp. 465-478
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

3. Aerating farmer stock peanut storage in the southeastern U.S

Author:
Butts, C.L.; Dorner, J.W.; Brown, S.L.; Arthur, F.H.
Source:
Transactions of the ASAE 2006 v.49 no.2 pp. 457-465
ISSN:
0001-2351
Subject:
stored products; peanuts; aeration; ventilation systems; agricultural structures and facilities; storage temperature; spatial variation; Arachis hypogaea; air flow; 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

4. Foliar deposition and off-target loss with different spray techniques in nursery applications

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. 325-334
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

5. Hydrologic evaluation of the Soil and Water Assessment Tool for a large tile-drained watershed in Iowa

Author:
Green, C.H.; Tomer, M.D.; Di Luzio, M.; Arnold, J.G.
Source:
Transactions of the ASAE 2006 v.49 no.2 pp. 413-422
ISSN:
0001-2351
Subject:
watershed hydrology; tile drainage; Soil and Water Assessment Tool model; Conservation Effects Assessment Project; subsurface drainage; agricultural watersheds; 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

6. Hydrologic impacts of land-use changes in coastal plain watersheds

Author:
Bosch, D.D.; Sullivan, D.G.; Sheridan, J.M.
Source:
Transactions of the ASAE 2006 v.49 no.2 pp. 423-432
ISSN:
0001-2351
Subject:
land use change; stream flow; afforestation; forested watersheds; watershed hydrology; satellites; remote sensing; coastal plains; agricultural watersheds; 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

7. Simulating water quality improvements in the Upper North Bosque River watershed due to phosphorus export through turfgrass sod

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. 357-366
ISSN:
0001-2351
Subject:
water pollution; sediment yield; harvesting; water quality; sod strips; nitrogen; cattle manure; best management practices; erosion control; nonpoint source pollution; filter strips; Soil and Water Assessment Tool model; turf grasses; phosphorus; agricultural watersheds; 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

8. Acoustic trap for female Mediterranean fruit flies

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. 2017-2022
ISSN:
0001-2351
Subject:
insect pests; courtship; insect communication; sounds; insect traps; insect control; Ceratitis capitata; females
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

9. Background reflectance compensation and its effect on multispectral leaf surface moisture assessment

Author:
Ramalingam, N.; Ling, P.P.; Derksen, R.C.
Source:
Transactions of the ASAE 2005 v.48 no.1 pp. 375-383
ISSN:
0001-2351
Subject:
multispectral imagery; Impatiens; greenhouse production; water; remote sensing; reflectance; spraying; leaves
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

10. Basal sediment concentration measurement using a time domain reflectometry method

Author:
Starr, G.C.
Source:
Transactions of the ASAE 2005 v.48 no.1 pp. 205-209
ISSN:
0001-2351
Subject:
sediment yield; rangelands; dielectric properties; stream channels; probes (equipment); time domain reflectometry; watersheds; watershed hydrology; runoff; water erosion; 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

11. Border strip fertigation: effect of injection strategies on the distribution of bromide

Author:
Adamsen, F.J.; Hunsaker, D.J.; Perea, H.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 529-540
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

12. Breach widening observations from earthen embankment tests

Author:
Hunt, S.L.; Hanson, G.J.; Cook, K.R.; Kadavy, K.C.
Source:
Transactions of the ASAE 2005 v.48 no.3 pp. 1115-1120
ISSN:
0001-2351
Subject:
floods; dams (hydrology); erodibility; water erosion
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

13. Characterization and modeling of a high-pressure water-fogging system for grain dust control

Author:
Brabec, D.; Maghirang, R.; Casada, M.; Haque, E.
Source:
Transactions of the ASAE 2005 v.48 no.1 pp. 331-339
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

14. Characterization of apparent soil electrical conductivity variability in irrigated sandy and non-saline fields in Colorado

Author:
Farahani, H.J.; Buchleiter, G.W.; Brodahl, M.K.
Source:
Transactions of the ASAE 2005 v.48 no.1 pp. 155-168
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

15. Combination soaking procedure for rough rice parboiling

Author:
Igathinathane, C.; Chattopadhyay, P.K.; Pordesimo, L.O.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 665-671
ISSN:
0001-2351
Subject:
rice; absorption; rice starch; soaking; parboiling; water; hot water treatment; gelatinization
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

16. Comparison of measured and simulated phosphorus losses wtih indexed site vulnerability

Author:
Veith, T.L.; Sharpley, A.N.; Weld, J.L.; Gburek, W.J.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 557-565
ISSN:
0001-2351
Subject:
agricultural soils; fields; risk assessment; losses from soil; nonpoint source pollution; Soil and Water Assessment Tool model; phosphorus; 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

17. Controlling soil erosion and runoff with polyacrylamide and phosphogypsum on subtropical soil

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. 149-154
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

18. Detection of pits in tart cherries by hyperspectral transmission imaging

Author:
Qin, J.; Lu, R.
Source:
Transactions of the ASAE 2005 v.48 no.5 pp. 1963-1970
ISSN:
0001-2351
Subject:
seeds; neural networks; hyperspectral imagery; food processing; color; detection; Prunus cerasus; cherries
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

19. Determining vitreousness of durum wheat using transmitted and reflected images

Author:
Wang, N.; Zhang, N.; Dowell, F.E.; Pearson, T.
Source:
Transactions of the ASAE 2005 v.48 no.1 pp. 219-222
ISSN:
0001-2351
Subject:
product grading; automatic detection; image analysis; transmittance; food grades; durum wheat; reflectance
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

20. Development and concept evaluation of an on-the-go soil strength measurement system

Author:
Hall, H.E.; Raper, R.L.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 469-477
ISSN:
0001-2351
Subject:
agricultural soils; soil penetration resistance; soil water content; soil strength; bulk density; penetrometers; soil compaction; soil profiles; sandy loam soils
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