Lev-Yadun, S., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel Atzmon, N., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel Perevolotsky, A., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Lev-Yadun, S., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel Atzmon, N., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel Perevolotsky, A., Dept. of Natural Resources, Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel