Influence of Weed Control and Fertility Levels on Soybean (Glycine Max (L.) Merill)1

A Held experiment was conducted at the J.N. Krishi Vishwa Vidyalaya, Jabalpur during Kharif 1985–86 and 1986–87 to study the influence of different weed control methods, nitrogen and phosphorus levels on soybean. Significantly lower density and biomass of all the weeds, as well as higher weed control efficiency, higher crop shoot biomass and higher seed yield were observed under two hand weeding, oxidiazon 1.0 kg/ha, fluchloralin 1.0 kg/ha and metribuzin 0.5 kg/ha. The higher fertility levels (30 kg N + 80 kg P2O5/ha) resulted in improved yield attributes, crop shoot biomass and seed yield/ha as compared to medium and lower fertility levsls. Higher fertility level [(30 N-80]kg P2O5/ha)] with oxadiazon 1.0 Vg/ha or two hand weedings (30 and 45 das) or mstribuzin 0.5 kg/ha or fluchioralin 1.0 kg/ha proved economically better than rest of the treatments.