On the causes of mite pest outbreaks in mono- and poly-cultured moso bamboo forests

Abstract

Abstract: In this paper,the damage of phytophagous mites Schizotetranychus nanjingensis Ma & Yuan,Aponychus corpuzae Rimando and Aculus bambusae Kuang to moso bamboo (Phyllostaychs pubescens) was examined for ten pairs of mono- and poly-cultured forests at six locations in Fujian,China.The results showed that the mite damage in mono-cultured forests (35%) was twice as high as that in poly-cultured forests (17.5%<the injury level of 20%),and the difference was significant by t-test.The total pest mites in the mono-cultured forests at six locations in Fujian were 289.29% as high as those in the poly-cultured stands.Typhlodromus bambusae,a nature enemy in the poly-cultured forests at five locations in Fujian,was 262.5% as high as that in the mono-cultured forests.The proportion of pest mite and nature enemy in the mono-cultured forests was 1:118,but was 1:13 in the poly-cultured forests.The change of bamboo cultivation (mono-culture,crowding of bamboo plants,and removal of underfloor plants) might be the major cause of mite pest outbreaks in moso bamboo forests.

Key words: Pest mites, Damage index, Typhlodromus bambusae, Outbreaks

CLC Number:

Q948
S763.46

ZHANG Yanxuan, ZHANG Zhiqiang, Yutaka Saito, LIU Qiaoyu, JI Jie. On the causes of mite pest outbreaks in mono- and poly-cultured moso bamboo forests[J]. Chinese Journal of Applied Ecology, 2004, (7): 1161-1165.

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