Herbicidal effect of imazethapyr and chlorimurin ethyl on yield parameters of green gram (Vigna radiata L.)

Abstract

The experiment was conducted during kharif, 2015 and 2017 at Agricultural Research Station, Madhira farm, Professor Jayashankar Telangana Agricultural University, Hyderabad (Telangana). The experimental soil was low in available N, medium in P and High in K. The experiment was laid out as RBD with three replications comprising eleven treatments viz., pendimethalin 1.0 kg ha-1 as pre emergence (PE), imazethapyr 50 g ha-1 at 2-3 weed leaf stage (WLS), chlorimuron ethyl 3.5 g ha-1 (PE), imazethapyr 70 g ha-1 (PE) fb quizalofop ethyl 50 g ha-1 (2-3 WLS), imazethapyr 80 g ha-1 (PE) fb quizalofop ethyl 50 g ha-1 (2-3 WLS), chlorimuron ethyl 3.5 g ha-1 (PE) fb imazethapyr 70 g ha-1 (2-3 WLS), chlorimuron ethyl 3.5 g ha-1 (PE) fb imazethapyr 80 g ha-1 (2-3 WLS), chlorimuron ethyl 2.5 g ha-1 (PE) fb imazethapyr 70 g ha-1 (2-3 WLS), chlorimuron ethyl 2.5 g ha-1 (PE) fb imazethapyr 80 g ha-1 (2-3 WLS), hand weeding twice at 15 and 30 DAS and weedy check (untreated control). Weed control treatments resulted as increased in grain yield than weedy check. Hand weeding twice at 15 and 30 DAS, imazethapyr 70 g ha-1 (PE) fb quizalofop ethyl 50 g ha-1 (2-3 WLS) and chlorimuron ethyl 2.5 g ha-1 (PE) fb imazethapyr 70 g ha-1 (2-3 WLS) recorded better yields in greengram.