Abstract
A long-term experiment has been conducted since 1979 at the ISU Northeast Research and Demonstration Farm, Nashua, Iowa, to study the effects of phosphorus (P) and potassium (K) fertilization on soil-test values and grain yield of corn and soybeans grown in rotation.
Keywords: Agronomy
How to Cite:
Mallarino, A. P. & Pecinovsky, K. T., (2014) “Phosphorus and Potassium Fertilization for Corn and Soybean Grown in Rotation for 30 Years”, Iowa State University Research and Demonstration Farms Progress Reports 2013(1).
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