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《Journal of South China Agricultural University》 2005-03
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Occurrence of Assara exiguella and its control

CHEN Bing-xu, HUANG Han-jie(Plant Protection Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China)  
Assara exiguella (Caradja) is a insect pest of chestnut. The results from experiment showed that the egg development duration of A.exiguella was (4.5±0.5) days, (14.0±2.0) days for larvae development duration in five instars, (8.0±1.0) days for its pupa development duration, (2.5±0.5) days for its adult preoviposition duration, (27.5±3.5) days for completing its one generation and there were 7 generations in east Guangdong Province, and that the adult's longevity was (4.0±1.5) days and the eggs laid was in sparse. The feeding behavior of the pest was observed that the larvae did not remove to feed another fruit after it bored into the fruit. The larvae overwintered in the fallen chestnut shells and trunks. The population of the insect pests was lower in the 1~(st) and 2~(nd) generation, while the larvae damaged the fruit stalks and fruits seriously. The varieties of chestnut, fruiting characteristics, cultivation system and rainfall were the main factors influencing the population of the pest. In farming practice, the measurements such as cleaning up the chestnut orchard in winter and spring, removing the second layer of flowers and the fruits without economics and intercropping with leguminaceous crops were good effective integrated control of the pest. And the insecticides chlorpyrifos and molosultup were used to control the pest in chestnut farming.
【Fund】: 广东省农业攻关项目(20011846)
【CateGory Index】: S436.64
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【References】
Chinese Journal Full-text Database 1 Hits
1 DONG Yi-zhi1,CHEN Bing-xu1,LIANG Guang-wen2,LU Heng1(1.Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China;2.Laboratory of Insect Ecology,South China Agricultural University,Guangzhou 510642,China);Spatial pattern and sampling technique of Assara exiguella (Caradja) Larvae in chestnut orchards[J];Guangdong Agricultural Sciences;2009-07
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1 DONG Rong-chun(Liaodong Institute,118003,China);Research on the Low-temperature Treatment for the Chestnut's Blight[J];Journal of Baicheng Teachers College;2005-03
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1 CHEN Bing-Xu,DONG Yi-Zhi,LU Heng(Plant Protection Research Institute,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China);Studies on the spatial distribution pattern of Dichocrocis punctiferalis larvae in chestnut trees[J];Journal of Environmental Entomology;2008-04
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1 Wang Rusong Lan Zongxiong Ting Yenchin(Institute of zoology, Academia Sinica);STUDIES ON MATHEMATICAL MODELS OF THE RELATIONSHIP BETWEEN INSECT DEVELOPMENT AND TEMPERATURE[J];Acta Ecologica Sinica;1982-01
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