Abstracts of lectures presented at symposium on plant protection and the environment: Pesticides and their alternatives - Claude L. Alabouvette; Ilan Chet; Jaacov Katan; Bruce D. Hammock; George Kamita; Bora Inceoglu; Qihong Huang; Jane Townson; David Evans; Baruch Rubin; Deborah K. Letourneau; Moshe Coll (Phytoparasitica, 2000)