[On the causes of mite pest outbreaks in mono- and poly-cultured moso bamboo forests].
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.
Zhang
Yanxuan
Y
Institute of Plant Protection, Fujian Academy of Agricultural Science, Fuzhou 350013, China. zyxli@pub3.fz.fj.cn
Zhang
Zhiqiang
Z
Yutaka
Saito
S
Liu
Qiaoyu
Q
Ji
Jie
J
D000818:Animals; D008925:Mites / Q000254:growth & development*; D010572:Pest Control, Biological / Q000379:methods; D006109:Poaceae / Q000469:parasitology*; D011157:Population Dynamics; D011235:Predatory Behavior; D014197:Trees / Q000469:parasitology*