Growth and patterns of population decline in Cydia pomonella adults in Gansu, Xinjiang and Inner Mongolia
The codling moth ( Cydia pomonella ( L. ) ) is a major fruit tree and quarantine pest. We used pheromone traps to monitor the occurrence of codling moth adults from 2005 to 2010 in 16 different orchards in different counties in Gansu, Xinjiang and Neimenggu Provinces. The results indicate that codling moths in these regions have 2. 5 generations. Under regular climatic conditions three peaks of adults occur at the beginning of May, late July and late August, with major discrepancies in different districts, or in the different orchards of a same district. Chemical based control and mating disruption had a great impact on the number of adults trapped, therefore monitoring life history was not appropriate in orchards where these methods were implemented. It was not possible to precisely predict the seasonal dynamics of the codling moth from the data obtained because this requires much more specific data about the seasonal dynamics of other life-cycle stages. Conclusions should only be drawn from monitoring results obtained from more than 3 orchards.
NETL
NSTL
万方数据
维普
