Selective control of graminaceous weeds in spring wheat

Infestation of wheat fields in Israel by graminaceous weeds is increasing due to effective control of broad-leaf weeds and lack of crop rotation. The main graminaceous weeds are wild oat (Avena sterilis L.) and wild canarygrass (Phalaris paradoxa L. andPh. brachystachys L.). In eight experiments carried out in wheat fields during 1975–1977, wild oat was effectively controlled by post-emergence applications of barban, isoproturon and difenzoquat, while wild canarygrass was controlled by post-emergence applications of barban, isoproturon and metha-benzthiazuron.