Early spring control of loose silky-bent (Apera spica venti) and broadleaved weeds in cereals

anthemis apera spica venti application en postemergence cereal crops chlorotoluron chlorsulfuron clorosulfuron clorotoluron cultivos de cereales czech republic dicotiledoneas dicotyledons escarda galium aparine herbicidas herbicide herbicides isoproturon lamium malezas mauvaise herbe papaver pendimetalina pendimethalin postemergence application preemergence application stellaria thlaspi viola weed control weeds