Vol. 11, Issue 12 (2022)

Author(s):
PS Panchal, VJ Patel, DD Chaudhari and MP Dohat

Abstract:
To evaluate the effect of different herbicides on growth, yield attributes and yield of Bt. cotton and their residual effect on succeeding summer groundnut, a field investigation was carried out during two consecutive kharif and summer seasons of 2019-20 and 2020-21 at the farm of AICRP-Weed Management, B.A. College of Agriculture, Anand Agricultural University, Anand, Gujarat. Tank mix application of pendimethalin (38.7% CS) 500 g/ha + oxyfluorfen 50 g/ha as PE fb pyrithiobac-sodium 62.5 g/ha + quizalofop-ethyl 50 g/ha as PoE (Tank mix), oxyfluorfen 100 g/ha as PE fb glufosinate ammonium 375 g/ha as directed spray as PoE and IC + HW at 20, 40 and 60 DAS recorded higher plant height, monopodial and sympodial branches, number of bolls/plant, seed index and seed cotton yield by achieving lower weed count and dry weight as well as higher weed control efficiency in Bt. cotton. Further, no residual effect of applied herbicides was observed on succeeding summer groundnut crop at tested dose in loamy sand soils of middle Gujarat.