Two field experiments were conducted during 1979 and 1980 seasons at the Research and Experimental Station of the Faculty of Agriculture at Moshtohor to study the effect of planting methods (Ilaraty and At ir) and some weed control treatments on growth characters of soybean and its associated weeds. The weed control treatments were: Linuron (1.0 kg), butralin (2.0 L), oxadiazon (2.0’L.), Netribuzin (0.5 kg), iphenamtde (1.5 kg), tridex (1.0 L.), phenisopham (1.0. L.), mixture cf linuron with other herbicides by using the half rate in addition to hand hoeing and unweeded treatment. Heraty (wet) method depressed significantly the dry weight of broad-leaved and grass weeds as compared to the afir (dry) method. On the other hand, heraty method significantly increased some growth characters of soybean plants, i.e.,plant height, no. of leaves/plant, dry weight of leaves as well as whole plant over afir (dry) method. The herbjcjdal combinations used in this study were more effective in controlling weeds and showed good effect on growth characters of soybean as compared with those of single herbicides. The interaction tffect was sigpificant on dry weight of weeds and some studied characters of soybean plants. |
