Tagari, H., Faculty of Agriculture, The Hebrew University of Jerusalem, POB 12, Rehovot, Israel Levy, D., Agricultural Research Organization, Nve Ya'ar Regional Experiment Station, Israel Holzer, Z., Agricultural Research Organization, Nve Ya'ar Regional Experiment Station, Israel Ilan, D., Advisory Service, Ministry of Agriculture, Israel
Tagari, H., Faculty of Agriculture, The Hebrew University of Jerusalem, POB 12, Rehovot, Israel Levy, D., Agricultural Research Organization, Nve Ya'ar Regional Experiment Station, Israel Holzer, Z., Agricultural Research Organization, Nve Ya'ar Regional Experiment Station, Israel Ilan, D., Advisory Service, Ministry of Agriculture, Israel