Weed Management in Summer Cluster bean

A field experiment was conducted during summer season of 2013-14 at Instructional farm, JAU, Junagadh where four pre & post-emergence herbicides either as integrated with hand weeding or sequentially applied were evaluated for efficacies of the herbicides on controlling weeds, their influences on growth, yield, quality and production economics on summer cluster bean variety GG-2. Significantly highest values of growth parameters viz., plant height, number of branches per plant, number of leaves per plant and dry matter of plant and yield attributes viz., number of pods per plant, length of pod, number of seeds per pod and test weight along with seed and stover yield as well as protein content and protein yield were recorded under weed free over weedy check. The economics of weed management treatments also indicated that pendimethalin @ 0.75 kg/ha as pre-emergence + HW at 40 DAS was most profitable in terms of significantly higher net returns ( 27162/ha) and B:C ratio (1.94) with lowest weed index (6.93%) followed by two hand weeding at 20 & 40 DAS ( 27045/ha and 1.91) over weedy check (9092/ha and 1.36).