Decline of Verticillium wilt incidence in almond.
Shabi E.
Author Affiliation: Department of Plant Pathology, ARO, Volcani Center, POB 6, Bet Dagan 50250, Israel.
Bulletin OEPP 27 :487
Abstract : Verticillium dahliae, a soil pathogen with a broad host range and high survivability, endangers a wide variety of fruit trees grown in Israel. The disease is common in avocado, mango, olive and stonefruit plantations. In nurseries, V. dahliae is a serious threat. In a 2-year-old almond grove, 42% of the trees had symptoms of Verticillium wilt. This almond plantation had been established in a field where, in the previous year, potato had been grown and found to be heavily infested with V. dahliae. Although more trees with wilt symptoms were evident during the third and fourth years and a few trees even died, the rate of wilt declined in the following years. After 8 years, symptoms of wilt were no longer detected in the trees.