Editorial board Sustaining Members of ASPP RESEARCH PAPERS Survey of seed-borne viruses in barley, lentil and faba bean seeds in Syria K.M. Makkouk, W. Radwan and A. Haj Kassem (SYRIA) Pages 3-8 Economic threshold of infestation with the cotton leaf worm, Spodoptera lottoralis (Boisd.) (Lepidoptera: Noctuidae) in cotton fields in A.R.E. 4- Economic injury levels during the