The crawling distance of codling moth Cydia pomonella (L. ) larvae was investigated in larvae obtained from 1 128 damaged apple fruit samples. 58.91% of larvae crawled while 41.09% of them did not. The crawling distance of most larvae (95% ) ranged from 0 to 7 m but the crawling distance of 50% larvae ranged from 0 to 1 m. These results indicate that control measures should be implemented within 0 - 7 m from where fruit have fallen and especially within 0 -1 m from fallen fruit. The larvae continue to damage apples for 25 days after the fruit has fallen which means that fallen fruit needs to be collected in a timely fashion. Cocooning height tended to be below 50 cm which means that trap bands should be located within 0-50 cm of the ground.
NETL
NSTL
万方数据
维普
