This research assesses the value of no-tillage and subsurface banded applications of phosphorus fertilizer, especially as they relate to surface runoff. The information will be used to improve soil test recommendations for farmers. The project uses data collected from several long-term experiments with corn-soybean rotations at Iowa State University research farms.
Antonio Mallarino is a professor in the ISU Department of Agronomy where he specializes in soil fertility and nutrient management. He has worked with the Leopold Center on numerous research projects, most recently a four-year experiment that studied the crop availability of phosphorus in beef manure. His undergraduate degree in agronomy and animal science is from the University of Uruguay; and his Ph.D. is in crop production and physiology from Iowa State University.
Matt Helmers, professor, ISU Agricultural and Biosystems Engineering