Effect of weed management on growth, yield and quality of summer soybean

Abstract

A trial entitled “Effect of plant extracts, straw mulch and herbicides on weed growth and yield of summer soybean” was carried out in the Weed Control Research Farm, Junagadh Agricultural University, Junagadh, on medium black calcareous soil during the summer season of 2023. The 12-treatments experiment was set up in a randomized block design with three replications. The results revealed that next to weed free treatment, pendimethalin 900 g/ha as pre-emergence fb IC & HW at 30 DAS (T8) or pre-mix pendimethalin 30% + imazethapyr 2% EC 750+50 g/ha as PE fb pre-mix fluazifop-p-butyl 11.1% + fomesafen 11.1% SL 125+125 g/ha at 30 DAS (T10) enhanced growth parameters viz., plant height, number of branches per plant at harvest; yield attributes viz., number of pods per plant, seed index and ultimately gave higher seed and stover yields. Also gave significantly higher gross and net returns as well as BCR.