Soybean Yields and Plant Composition as affected by Phosphorus and Potassium Fertilizers by R.J. Miller, February 1964

(1964) Soybean Yields and Plant Composition as affected by Phosphorus and Potassium Fertilizers by R.J. Miller, February 1964. Iowa State University

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Abstract

The primary objective of this study was to determine if soybean grain yields could be predicted by the P and K content of the growing plant. A supporting objective was to find what plant parts should be taken, and at what stage of growth, to give the best relationship. Multiple curvilinear regression analysis was used to determine this relationship from data collected in four field experiments.