Nirtrogen nutrition and yield of rice (culture 1727) at different levels of major nutrients

Abstract

In a fertilizer management experiment conducted during 1988 crop seasons with different levels of N, P and K, it was observed that 50 kg N/ha was sufficient for the rice cultivar Culture 1727 from the point of view of economics and nitrogen use efficiency, in laterite soil with low available nitrogen status. Application of different levels of N, P and K did not show any marked effect on the grain and straw yield. Plant nitrogen content decreased and uptake increased up to 50 per cent flowering. Maximum nitrogen uptake was observed in between 30 to 40 days after transplanting. Better utilization of nitrogen was observed during the second crop season (Oct-Jan).