Corn and Soybean Grain Yield Response
to Different Phosphorus Fertilization Rates
and Soil-Test Phosphorus Levels

Antonio Mallarino; John Jones; Louis Thompson; Kenneth Pecinovsky

Northeast Research and Demonstration Farm

Corn and Soybean Grain Yield Response to Different Phosphorus Fertilization Rates and Soil-Test Phosphorus Levels

Authors: Antonio Mallarino (Iowa State University) , John Jones (Iowa State University) , Louis Thompson (Iowa State University) , Kenneth Pecinovsky (Iowa State University)

Abstract

Phosphorus (P) fertilization is needed for profitable crop production in most Iowa soils. Extensive research has been conducted for decades on crop yield response to P and calibration of soil-test P methods. Frequent changes in crop genotypes and increasing yield levels necessitates continuous research to revise and update management guidelines as needed. This report summarizes results of a multi-year experiment conducted to evaluate corn and soybean grain yield response to different P fertilization rates and soil-test P levels.

Keywords:

How to Cite: Mallarino, A. , Jones, J. , Thompson, L. & Pecinovsky, K. (2018) “Corn and Soybean Grain Yield Response to Different Phosphorus Fertilization Rates and Soil-Test Phosphorus Levels”, Iowa State University Research and Demonstration Farms Progress Reports. 2017(1).