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Profitability Of Variable Rate Phosphorus In A Two Crop Rotation, Jennie Popp, Terry W. Griffin, Michael P. Popp, William H. Baker
Profitability Of Variable Rate Phosphorus In A Two Crop Rotation, Jennie Popp, Terry W. Griffin, Michael P. Popp, William H. Baker
Journal of the Arkansas Academy of Science
The purpose of this study is to examine the profitability of variable rate phosphorus application on a rotation of rice (Oryza sativa) and soybeans (Glycine max) on fields comprised of clay and silt loam soils. Phosphorus was chosen because 1) farmers have recently been advised of the benefit of phosphorus applications on rice as well as soybeans, 2)recommended phosphorus application rates vary greatly between clay and silt loam soils and across rice and soybeans, and 3) the residual effects of phosphorus applications in a crop rotation affect the appropriateness of variable rate technology (VRT). A three phase simulation, regression and …