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A Study on the Integrated Control Technique of Dryocosmus kuriphilus Yasumatsu in North Hubei.

Yan Yizhang Liu Yongsheng Jiang Dean Li Guoyuan and Zhang Zhixiang(Department of ForestSpecialty,Xiaogan Teachers Vocational School,Hubei 432100).  
In north Hubei,the chestnut gall-wasp,Dryocosmus kuriphilus Yasumatsu reproduces oncea year.Their larvae overwinter in the chestnut buds,and begin to move when the buds grow in early Aprilof the next year.The resulting galls restrain the growth of new shoots,and therefore,affect the gains ofnuts,or even worse.The Chalcids,Torymus syntomaspis,is a dominant natural enemy against the gall-wasp in this area.The outbreak of this gall-wasp can be controlled when the ratio of the parasitoids to thepests is one to five.On the basis of clearing up the orchard by eliminating other bushes and cutting up theintruded twigs,to develop the natural enemy by collecting the galls and hanging them in the orchard inlate March is effective. Pesticides can also be applied as an accessory measure to reduce the damage.
【CateGory Index】: S436.64
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