Project Number: 5407-12130-006-00
Start Date: Jun 01, 2006
End Date: May 31, 2011
Field, and laboratory experiments and modeling efforts will be conducted to determine the adaptability of current dryland cropping systems to potential changes in climate (primarily drought the result of declining precipitation and/or increases in evaporative demand) in the region. These experiments and modeling efforts will include studies to evaluate and test the adaptability of dryland crop rotations across a regional site network that varies in soil type, climate and elevation (topography). Experiments will include the effects of residue management, nutrient management and crop ecological management to maximize carbon fixation/sequestration and crop yield and to reduce dependence on pesticides and other ag-chemicals. The effect of rotation and soil management on soil chemical, physical and biological quality will be also quantified. Crop and soil simulation models will be calibrated/evaluated for prediction accuracy of yield and soil transformations using 102 years of climate data and multiple years of crop rotation results to extrapolate research at CGPRS to other locations in the region. Economic risk assessment of intensive dryland rotations will be calibrated to determine economic feasibility.