Effect of Nutrient and Weed Management Practices on Growth, Yield Parameters and Yield of Semi Dry Rice in Central Telangana One

Abstract

A field experiment was carried out at College Farm, Agril. College, Aswaraopet, Bhadradri Kothagudem Dist. The experimental site was sandy clay loam soil. The experiment was laid out in a split plot design with three replications comprising of three nutrient (chemical fertilizer alone and integration of fertilizers with organic manures) and four weed management practices (Control, combination of pre/early post-emergence and post-emergence herbicides along with hand weedings) in semi dry rice during kharif 2016 and 2017.Application of integrated nutrient and weed management recorded significantly superior growth and yield parameters and yield compared to sole application of herbicides or control. Plant height, dry matter production, no. of panicles m-2, no. of filled grains panicle-1, test weight, grain and straw yield and harvest index were higher with 75% RDF+25% N through vermicompost and Bispyribac sodium 10% SC @25 g ha-1 (Pre-Emg.) fb (Pyrazosulfuron ethyl 10 % WP @ 25 g ha-1 + 2, 4-D 80% WP @ 0.5 kg a.i ha-1) + HW @ 50 DASat par with 75% RDF + 25% N through FYM and Bispyribac sodium 10% SC @25 g ha-1 (Pre-Emg.) fb Hand weeding @ 20, 40 DASas compared to 100% RDF and control.