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You searched for: Journal name Transactions of the ASAE Remove constraint Journal name: Transactions of the ASAE Publication year rev 7995-2005 Remove constraint Publication year rev: 7995-2005 Source 2005 v.48 no.2 Remove constraint Source: 2005 v.48 no.2
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1. 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

2. 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

3. 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

4. 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

5. Forest site preparation effects on soil and nutrient losses in east Texas

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. 861-869
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

6. Generating correlative storm variables for CLIGEN using a distribution-free approach

Author:
Zhang, X.C.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 567-575
ISSN:
0001-2351
Subject:
sediment yield; simulation models; Water Erosion Prediction Project; rain; climate models; storms; runoff; water erosion; prediction
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

7. Image-processing solution to cotton color measurement problems. I. Instrument design and construction

Author:
Thomasson, J.A.; Shearer, S.A.; Byler, R.K.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 421-438
ISSN:
0001-2351
Subject:
image analysis; meters (equipment); lint cotton; cotton gin trash; color; image processors; computer software; measurement; fiber quality; seed cotton
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

8. Modeling sediment trapping in a vegetative filter accounting for converging overland flow

Author:
Helmers, M.J.; Eisenhauer, D.E.; Franti, T.G.; Dosskey, M.G.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 541-555
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

9. Non-water-stressed baselines for calculating crop water stress index (CWSI) for alfalfa and tall fescue grass

Author:
Payero, J.O.; Neale, C.M.U.; Wright, J.L.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 653-661
ISSN:
0001-2351
Subject:
Festuca arundinacea; canopy; equations; air temperature; Medicago sativa; alfalfa; water stress; thermometers; irrigation scheduling; 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

10. Prediction of pesticide losses in surface runoff from agricultural fields using GLEAMS and RZWQM

Author:
Chinkuyu, A.; Meixner, T.; Gish, T.; Daughtry, C.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 585-599
ISSN:
0001-2351
Subject:
GLEAMS model; atrazine; fields; agricultural runoff; herbicide residues; seepage; losses from soil; nonpoint source pollution; metolachlor; Root Zone Water Quality Model; prediction; 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

11. Rate and frequency of urease inhibitor application for minimizing ammonia emissions from beef cattle feedyards

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. 787-793
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

12. Use of an aspirator to separate meat and bone meal into high-ash and high-protein streams

Author:
Garcia, R.A.; Flores, R.A.; Phillips, J.G.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 703-708
ISSN:
0001-2351
Subject:
animal source protein; aspirators; meat and bone meal; separation; 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

13. A transponder for harmonic radar tracking of the black vine weevil in behavioral research

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. 831-838
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

14. Comparison of the Weibull model wtih measured wind speed distributions for stochastic wind generation

Author:
van Donk, S.J.; Wagner, L.E.; Skidmore, E.L.; Tatarko, J.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 503-510
ISSN:
0001-2351
Subject:
simulation models; computer analysis; soil erosion models; wind speed; wind erosion; stochastic processes; Weibull statistics
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

15. Correcting PM10 over-sampling problems for agricultural particulate matter emissions: preliminary study

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. 749-755
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

16. Development and testing of watershed-scale models for poorly drained soils

Author:
Fernandez, G.P.; Chescheir, G.M.; Skaggs, R.W.; Amatya, D.M.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 639-652
ISSN:
0001-2351
Subject:
water pollution; simulation models; water quality; forested watersheds; nitrate nitrogen; streams; coastal plain soils; poorly drained soils; pollution load; subsurface drainage; hydrologic models; 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

17. Image-processing solution to cotton color measurement problems. II. Instrument test and evaluation

Author:
Thomasson, J.A.; Shearer, S.A.; Boykin, D.L.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 439-454
ISSN:
0001-2351
Subject:
image analysis; meters (equipment); lint cotton; cotton gin trash; color; measurement; fiber quality; seed cotton
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

18. Nondestructive moisture determination in small samples of peanuts by RF impedance measurement

Author:
Kandala, C.V.K.; Nelson, S.O.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 715-718
ISSN:
0001-2351
Subject:
sampling; peanuts; food analysis; capacitance; water content; nondestructive methods
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

19. Potential effects of climate change on rainfall erosivity in the Yellow River basin of China

Author:
Zhang, G.H.; Nearing, M.A.; Liu, B.Y.
Source:
Transactions of the ASAE 2005 v.48 no.2 pp. 511-517
ISSN:
0001-2351
Subject:
sediment yield; General Circulation Models; climate change; losses from soil; rain; water erosion; 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