1Senior Agronomist, Regional Research and Technology Transfer Station, Chiplima, Odisha 768 025
2Associate Director of Research, Regional Research and Technology Transfer Station, Chiplima, Odisha 768 025
Seed Research Farm, Orissa University of Agriculture and Technology, Gambharipali, Bargarh Odisha 768 028
*Corresponding author's E mail: santanu_kt@yahoo.co.in
Online published on 6 May, 2017.
A field experiment was conducted during the rainy season of 2012 and 2013 at Gambharipali, Bargarh Odisha, to study the bio-efficacy of various herbicides on weeds, yield and economics of drum-seeded rice (Oryza sativa L.). Sole application of chlorimuron ethyl + metsulfuron methyl @ 4 g/ha, ethoxysulfuron @ 18 g/ha and 2, 4-D ethyl ester @ 400 g/ha showed selectivity towards broad-leaf weeds, whereas fenoxaprop-p-ethyl @ 60 g/ha showed selectivity towards grasses. Tank-mix application of chlorimuron ethyl + metsulfuron methyl with fenoxaprop-p-ethyl (4+60 g/ha) proved to be the most effective in minimizing the density (10.57/m2), biomass (4.07 g/m2) of weeds and enhancing the weed-control efficiency (95.7%), grain yield (5.68 t/ha), N, P and K uptake by crop, net returns (30, 439/ha) and benefit: cost ratio (0.61).
Chlorimuron + metsulfuron, Drum seeded rice, Ethoxysulfuron, Fenoxaprop-p-ethyl, Herbicide mixture, Weeds
