Abstract

A field experiment was conducted during the rainy seasons of 1968 and 1969 to study the nitrogen nutrition of soybean plant as affected by nitrogen and phosphorus fertilization and inoculation. Nitrogen concentration in leaf lamina, petiole, stem and husk decreased while that in grain increased with advance in age. Accumulation of total nitrogen in leaf lamina, petiole and stem increased upto 65 days after sowing. Accumulation in grain increased and in husk decreased with increase in age of plant. Nitrogen and inoculation both increased the nitrogen accumulation in various plant parts. Inoculation effects were more conspicuous in absence of nitrogen fertilization.

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