Northern Research and Demonstration Farm
Authors: Antonio P. Mallarino (Iowa State University) , David Rueber (Iowa State University)
A study was conducted from 1976 to 2002 to evaluate the effect of annual phosphorus (P) fertilization on soil P and yields of corn and soybeans. Both crops were grown each year in a rotation by alternating them between two halves of the area. Cornstalks were chisel-plowed in the fall and disked in the spring. Soybean residue was disked in spring. The Webster soil predominated, and there were small areas of Canisteo. Soil pH varied from 6.0 to 8.2. Less than 15% of the area had a pH of 7.3 or higher (calcareous).
Keywords: Agronomy
How to Cite: Mallarino, A. P. & Rueber, D. (2004) “Long-term Phosphorus Fertilization for Corn-Soybean Rotations”, Iowa State University Research and Demonstration Farms Progress Reports. 2003(1).