However, the inhibitory materials may be autoinhibitory or heteroinhibitory (Kumari and Kohli, 1987), some White top [Cardaria draba (L.) Desv.] and Syrian sage (Salvia can be highly selective (Stachon and Zimdahl, 1980; syriaca L.) are noxious common weeds of field crops and orchards Sahid and Sugau, 1993), and their effect is concentration in Jordan. This study was conducted to investigate an...
