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Amanda M. Nelson, Mahesh L. Maskey, Brian K. Northup and Daniel N. Moriasi
Recently, the Agricultural Policy Extender (APEX) model was enhanced with a grazing module, and the modified grazing database, APEXgraze, recommends sustainable livestock farming practices. This study developed a combinatorial deterministic approach to c...
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Cori Salinas, Edward Osei, Mark Yu, Selin Guney, Ashley Lovell and Eunsung Kan
Wheat offers winter forage for cattle grazing and is one of the most valuable cash crops in Texas. In this study, we evaluate the impacts of climate change projections on winter wheat grain yields in five major wheat producing counties in Texas (Deaf Smi...
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Edward Osei, Syed H. Jafri, Philip W. Gassman and Ali Saleh
While the ecological benefits of no-till are largely indisputable, the economic impacts are less certain, and the latter may be partly to blame for lower-than-expected adoption of no-till. In this study, we contribute to a better understanding of the eco...
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Edward Osei, Syed H. Jafri, Philip W. Gassman, Ali Saleh and Oscar Gallego
Nonpoint source pollution from cultivated croplands has often been associated with downstream water quality impairment in various watersheds. Given projected changes in global climate patterns, this study contributes to the existing literature by elucida...
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Amirreza Sharifi, Sangchul Lee, Gregory W. McCarty, Megan W. Lang, Jaehak Jeong, Ali M. Sadeghi and Martin C. Rabenhorst
The Agricultural Policy/Environmental eXtender (APEX) model has been widely used to assess changes in agrochemical loadings in response to conservation and management led by US Department of Agriculture (USDA). However, the existing APEX model is limited...
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Michael J. White, Marilyn Gambone, Elizabeth Haney, Jeffrey Arnold and Jungang Gao
Water quality simulation models such as the Soil and Water Assessment Tool (SWAT) and Agricultural Policy EXtender (APEX) are widely used in the US. These models require large amounts of spatial and tabular data to simulate the natural world. Accurate an...
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Soon-Kun Choi, Jaehak Jeong and Min-Kyeong Kim
The Agricultural Policy/Environmental eXtender (APEX) model is widely used for evaluating agricultural conservation efforts and their effects on soil and water. A key component of APEX application in Korea is simulating the water quality impacts of rice ...
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Golmar Golmohammadi, Shiv Prasher, Ali Madani and Ramesh Rudra
Selecting the right model to simulate a specific watershed has always been a challenge, and field testing of watersheds could help researchers to use the proper model for their purposes. The performance of three popular Geographic Information System (GIS...
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