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Crop Residue Yield Variability in North Central Region

Crop Residue Yield Variability in North Central Region. Rajesh Chintala. OBJECTIVES. Determine the variability in crop residue yields (response variable) of North Central Region

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Crop Residue Yield Variability in North Central Region

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  1. Crop Residue Yield Variability in North Central Region Rajesh Chintala

  2. OBJECTIVES • Determine the variability in crop residue yields (response variable) of North Central Region • Study the spatial patterns and variability of climatic, soil and topographic factors (explanatory variables) over a period of time and derive the empirical relationships with residue yield variability • Assess the supply of collectable crop residues after meeting the sustainability

  3. METHODS • Study area : North Central Region • Residue production: USDA – NASS data 1970-2008 • Spatial averages of climatic and soil variables: climatic parameters - precipitation, air temperature soil variables – SOM, SWC, slope, soil depth, permeability, texture, pH, CEC • Available crop residue – using parameters like SCI

  4. PREDICTION PROFILERS

  5. EXPECTED OUTCOME • Spatial and temporal patterns of crop residue stability, variability and dependability • Predictive modeling utilizing the derived empirical relationships • Helps to determine the sustainable supply of crop residue quantity and its spatial patterns over north central region • IA - Dry tons = - 6485 + 3.2 * corn acres – 1.04* oat acres – 16.3* wheat acres • IN - Dry tons = - 10407 + 3.08 * corn acres + 1.27* wheat acres • SD - Dry tons = 3954 + 0.91 * wheat acres – 0.72* oat acres + 2.46* corn acres + 1.98 *barley • MT - Dry tons = - 5003 + 1.80 *barley acres – 0.80* wheat acres + 5.88* corn acres • WY - Dry tons = -1252 + 1.94 * barley acres + 2.50* corn acres

  6. FEEDSTOCK YIELD DATA COLLECTION & COMPILATION • Grain yield data from 2000 - till now • Millets – corn, sorghum small grains – wheat, barlely, oats oil seeds - sunflower, canola, safflower, and camelina legume – soybean grasses – switchgrass, alfafalfa • NE, SD, WY, MT, MN, IA, ND • Published research articles, websites, annual reports of research centers, and yield trails conducted by universities

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