Occurrence and Control of Willow Witches'Broom in Yulin
Willow is one of the main landscaping tree species in Yulin.In recent years,willow witches'broom has erupted on a large scale in some areas of Yulin,seriously affecting the landscaping effect of the city.This article in-vestigates the occurrence of witches'broom disease of weeping willows and Salix matsudana Koidz.of different re-gions and ages in Yulin,and it is found that the occurrence of diseases is related to the construction time of the green area.The earlier construction time is,the more serious of the disease is,and the simpler the ecological envi-ronment structure is,the lower the occurrence rate is.Finally,it proposes the comprehensive control methods(in-cluding resistant cultivar selection,tree management,chemical control and physical control)in order to provide a theoretical basis for occurrence regularity and prevention of witches'broom disease of willows.
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