Journal name: Transactions of the ASAE / Subject: crop management

Author:: Flerchinger, G.N.; Aiken, R.M.; Rojas, K.W.; Ahuja, L.R.
Source:: Transactions of the ASAE 2000 v.43 no.1 pp. 59-68
ISSN:: 0001-2351
Subject:: simulation models; rhizosphere; soil temperature; crop residues; crop management
Abstract:: ... Soil temperature and water conditions through the winter and early spring drive many important physical, chemical and biological processes. Impacts of management practices on these complex processes are often difficult to predict. The primary objective of this study was to incorporate routines for snow, soil heat, and soil freezing from the Simultaneous Heat and Water (SHAW) model into the process ...
Handle:: 10113/42708

Author:: Evans, R.G.
Source:: Transactions of the ASAE 2004 v.47 no.4 pp. 1029-1037
ISSN:: 0001-2351
Subject:: temperature; orchards; irrigation water; solar radiation; apples; crop quality; mathematical models; equations; sprinkler irrigation; fruit diseases; disease control; evaporation; Malus domestica; energy balance; fruit growing; crop management; scald diseases; prediction
Abstract:: ... Sunburn (or sun scald) of fruit surfaces exposed to direct sun is a major economic problem of fresh apples and other important horticultural crops. There is a critical need to maximize evaporative efficiency and avoid excessive water use. A process-based energy balance model has been developed and compared with field data for apple skin temperatures during evaporative cooling to reduce sunburn on ...
Handle:: 10113/9705

Author:: Yuan, Y.; Bingner, R.L.; Rebich, R.A.
Source:: Transactions of the ASAE 2001 v.44 no.5 pp. 1183-1190
ISSN:: 0001-2351
Subject:: watersheds; crop production; crop management; cover crops; winter; pollution control; water pollution; erosion control; water erosion; sediment yield; simulation models; agricultural land; losses from soil; runoff; prediction; best management practices; nonpoint source pollution; Mississippi
Abstract:: ... Sediment and its associated pollutants entering a water body can be very destructive to the health of that system. Best Management Practices (BMPs) can be used to reduce these pollutants, but understanding the most effective practices is very difficult. Watershed models are the most cost-effective tools to aid in the decision-making process of selecting the BMP that is most effective in reducing t ...
Handle:: 10113/26652

Author:: Zhang, X.C.; Nearing, M.A.; Risse, L.M.; McGregor, K.C.
Source:: Transactions of the ASAE 1996 v.39 no.3 pp. 855-863
ISSN:: 0001-2351
Subject:: meteorological data; simulation models; tillage; Water Erosion Prediction Project; crop management; soil erosion; runoff; accuracy; prediction; United States
Abstract:: ... Model testing and evaluation are critical to the acceptance of any new prediction tool. This study was conducted to evaluate the overall performance of the Water Erosion Prediction Project (WEPP) hillslope model in predicting runoff and soil loss under cropped conditions. Natural runoff plot data, including 4,124 selected events 556 plot years, and 34 cropping scenarios, from eight locations were ...
Handle:: 10113/6600

Author:: Senay, G.B.; Ward, A.D.; Lyon, J.G.; Fausey, N.R.; Nokes, S.E.
Source:: Transactions of the ASAE 1998 v.41 no.2 pp. 489-495
ISSN:: 0001-2351
Subject:: Zea mays; global positioning systems; spatial distribution; geographic information systems; precision agriculture; crop yield; remote sensing; crop management
Abstract:: ... Three spatial data sets consisting of high spatial resolution (1 m) remote sensing images acquired in 12 spectral bands, an on-the-go yield map, and a Digital Elevation Model were co-registered and evaluated for spatial variability studies in a Geographic Information Systems environment. Separate on-the-go yield maps were developed for 3, 5, and 12 statistically significant mean yield classes. For ...
Handle:: 10113/27079

Author:: Allen, R.R.; Musick, J.T.; Hollingsworth, L.D.
Source:: Transactions of the ASAE 1982 v.25 no.6 pp. 1529-1532
ISSN:: 0001-2351
Subject:: harvest date; Zea mays; crop quality; lodging; seeds; insect pests; corn ears; Diatraea grandiosella; corn; water content; grain yield; insect control; crop management; Texas
Abstract:: ... The tops of maize plants were removed above the ear at physiological maturity to determine if that practice would hasten field grain drying in a semi-arid climate. Topping lowered the grain moisture content 1.5 percentage points below that of non-topped maize until the grain had dried to about 20% moisture content. Topping reduced lodging if harvest was delayed but had no significant effect on com ...
Handle:: 10113/506

Author:: Howell, T.A.; Yazar, A.; Schneider, A.D.; Dusek, D.A.; Copeland, K.S.
Source:: Transactions of the ASAE 1995 v.38 no.6 pp. 1737-1747
ISSN:: 0001-2351
Subject:: Zea mays; evapotranspiration; soil water content; water use efficiency; clay loam soils; leaf area index; crop management; center pivot irrigation; yield components; grains; biomass; climatic factors; Texas
Abstract:: ... Center-pivot sprinklers are rapidly expanding on the Southern High Plains, and LEPA (low energy precision application) application methods are widely used in this region to reduce water application losses, to use the relatively low well yields, and to reduce energy requirements for pressurization. This study was conducted to evaluate LEPA irrigation response of corn (Zea mays L.) on slowly permeab ...
Handle:: 10113/1091

Main content area