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.
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).
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