Role of Nitrogen, Phosphorus and Potassium Fertilizers in Continuous Corn Culture on Nicollet and Webster Soils, February 1964

(1964) Role of Nitrogen, Phosphorus and Potassium Fertilizers in Continuous Corn Culture on Nicollet and Webster Soils, February 1964. Iowa State University

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Abstract

This publication reports the results obtained from continuous corn experiments conducted on the Iowa State University Agronomy Farm near Ames, Iowa. Reported are corn yields from an experiment where corn was grown each year on the same set of plots since 1915. Reported also are corn yields from another experiment where corn has been grown continuously since 1953. T he two continuous corn experiments are on soils with quite different original levels of productivity.