Critical agronomic interventions for enhancing productivity of dry direct sown rice in North-Coastal AP

Abstract

A field experiment on dry direct sown rice was conducted during kharif, 2018 and 2019 at the Agricultural College Farm, Naira, Srikakulam of North-Coastal zone of A.P to study the influence of weed control methods, nutrient management practices and micronutrients application on growth and yield. Remarkable effects were noticed on growth and yield components viz., plant height, productive tillers m-2, grain and straw yield of rice. Various weed management treatments significantly decreased the population and dry weight of weed and increased the crop growth characters and yield when compared to weedy check. Among weed control methods, sequential application of pyrazosulfuron ethyl fb.florpyrauxifen-benzyl registered taller plants, higher number of productive tillers m-2, higher grain and straw yield which was however, found parity with bispyribac sodium fb. 2,4-D amine salt + fenoxyprop-ethyl with safener. Among nutrient management practices, application of 100% RDF produced tallest plants as well as higher yields. Basal application of ZnSO4 @ 50 kg ha-1 outperformed other micronutrient management practices.