Effect of planting methods and weed management practices on yield of green gram (Vigna mdiata (L.) R. Wiiczek}, weed dynamics vis a vis phytotoxicity ingreen gram

摘要

An experiment was carried out to find out suitable method of planting and weed management in green gram grown during the kharif season of 2014 and 2015. The density of E. colona and C. rotundas was significantly reduced in raised bed planting method.Significant reduction in total dry weight of weeds was obtained in raised bed planting method as compared to conventional and zero till planting method. Maximum weed control efficiency was found in raised bed planting method. Significantly more number ofseeds pod ' were observed in raised bed planting method as compared to conventional and zero till planting method. Seed yield and straw yield were found maximum in raised bed planting method during both years of study and were statistically at par in conventional and zero till planting method. Harvest index was not influenced by planting methods. Phytotoxicity on crop due to different herbicides was similar under different planting methods. Among different weed management treatments, HW at 15 and 30 DAS was found most effective in reducing density and dry weight of weeds during crop growing period except at 15 DAS (where weeding was done after taking observation). Maximum weed control efficiency was observed in HW (15 & 30 DAS). Weedy check treatmentresulted in minimum while weed free treatment resulted in maximum number of seeds pod"1. Among the treatments having herbicide application, post emergence application of Imazethapyr @ 100 g ha1 resulted in maximum seed and stover yield.