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Translocation of Nutrients in Soybeans¹

ABSTRACT

Transport of nutrients in plants represents an important area in the pursuit of a greater understanding of plant nutrition. A mathematical model was developed to describe the changes in accumulation of nutrients in soybean [Glycine max L. Merr.] plants during the growing season. The model uses the compartmental approach to describe transport of nutrients between three compartments: soil (including roots), plant (including stems, petioles, and leaves), and pod (including seed). The validity of the model was tested using published data for soybeans grown in the field. The results show that nutrient translocation in soybeans varies with the type of nutrient, growth stage, and growing season.

¹ Contribution from the Dep. of Agronomy and Dep. of Mathematics, Univ. of Arkansas, Fayetteville, AR 72701. Published with the approval of the Director of the Arkansas Agric. Exp. Stn.

² Associate Professor of Agronomy and Assistant Professor of Mathematics, respectively.

Received for publication November 5, 1979. Accepted for publication January 3, 1980.