PRAKASH, S. S.HEMANTHA KUMARA, G. B.2017-07-102017-07-102015-01-12Th-10982http://krishikosh.egranth.ac.in/handle/1/5810024772Field experiment was conducted at Zonal Agricultural Research Station, V.C. Farm, Mandya to study the effect of varied levels of major nutrients with sulphur, zinc and boron on soil properties, growth and yield of hybrid rice. There were three levels of NPK (0, 125:62.5:62.5 and 150:50:75 kg ha-1, respectively) as main plots and eight subplot treatments comprising control, zinc sulphate, gypsum and borax applied individually and in combinations (0, 20, 100 and 5 kg ha-1, respectively). The experiment was laid out in split plot design and replicated thrice. Significantly higher grain (6188 kg ha-1) and straw (7726 kg ha-1) yield of hybrid rice was recorded due to application of NPK at the rate of 125:62.5:62.5 kg ha-1. Among subplot treatments, application of zinc sulphate, gypsum and zinc sulphate + gypsum + borax recorded significantly higher grain and straw yield compared to control. Uptake of primary, secondary and micronutrients were significantly increased with the application of NPK fertilizers, zinc sulphate, gypsum and borax when compared to control. Similarly available major, secondary and micronutrients status were significantly affected due to application of major nutrients with gypsum, zinc sulphate and borax. Higher gross returns was recorded in the treatment that received 125:62.5:62.5 kg ha-1 of N, P2O5 and K2O and 20 kg ha-1 of zinc sulphate as compared to other treatments.ennullThesis