Accumulation and partitioning of dry matter and nutrients in soybean

Abstract

A pot experiment was conducted to study the dry matter and nutrients accumulation pattern in soybean (cv. GJS-3) on clay soil (Typic Heplustepts) of Sagdividi Research Farm, Junagadh Agricultural University, Junagadh. The results showed that the maximum dry matter in plant (55.3 %) was accumulated during pod development stage. Soybean shoot showed higher accumulation of dry matter and nutrients, followed by seed and roots and shell, except N, and S which was higher in seed. The removal of nutrients was recorded in the ranges of 4.8 to 10.5, 35.1 to 79.4 and 11.2 to 60.1 per cent of the total requirement of different nutrients during vegetative, reproductive and pod development stages, respectively. The peak absorption of Ca, Mg, K, Fe and Mn took place during reproductive stage, that of N, K, and S, at pod development stages and Zn and Mn almost equally during reproductive and pod development stages.