Response of hybrid rice to nutrient application in vertisols of Andhra Pradesh
The response of hybrid rice to nutrient application was studied in field experiments during wet season . Both the test hybrids KRH-2 and PHB-71 recorded significantly higher grain yield than the check vareity Jaya. Application of 120:60:80 kg of N, P2O5 and K2O ha-1 recorded significantly higher grain yield (6.11 t ha-1) followed by 120:60:40 kg of N, P2O5 & K2O ha-1 (6.05 t ha-1). Among the hybrids, mean maximum nutrient response of 15.57 kg grain per kg nutrients was recorded by PHB-71. Among the nutrients levels, mean maximum nutrients response (17.28 kg grain per kg nutrients) was recorded by the fertilizer schedule of 120:60:40 kg of N, P2O5 & K2O ha-1. Hybrid KRH-2 recorded maximum net return of Rs. 21,111 ha-1 while among nutrients combinations, mean maximum net returns (Rs.23,070 ha-1) was recorded with 120:60:40 kg of N, P2O5 and K2O ha-1.
Author : S. P. Singh, B. Sreedevi, R.M. Kumar and S.V. Subbaiah
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