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, P₂O₅and K₂O ha⁻¹recorded significantly higher grain yield (6.11 t ha⁻¹) followed by 120:60:40 kg of N, P₂O₅& K₂O ha⁻¹(6.05 tha⁻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, P₂O₅and K₂O ha⁻¹.