The larvae of chestnut weevils (Curculio spp.) How long do the Orcon Grub Control (7 million) (GC-R7M) nemetodes live? This insect is not limited to the chestnut. Other suggested control methods include collecting fallen chestnuts which may contain larvae, and the use of biological pest control agents, such as fungi. are whitish worms that feed on the flesh of the nuts as they develop. It causes galls to form on growing shoot tips, stopping nut production. Female weevil lays her eggs in the shell of the nut and larvae hatch and feed inside; larvae exit the nut through a small hole bored in the shell and enter the soil when the nut falls to … In some chestnut-growing regions, infestation of the fruit by weevil larvae can reach 90%. there are two species of weevil that attack chestnuts, they are not the same as the ones that go after acorns. Three to four applications of insecticide beginning about 7-10 August, and repeated at 10-day intervals, will provide control of adult chestnut weevils. Is there something that is effective I could try? If all newly emerged larvae are destroyed for a period of 3-4 consecutive years, weevil populations can be reduced to tolerable levels. Q&A related to Chestnut Weevils. sanitation is the main organic method in this country, as the only effective spray is seven (a nasty synthetic insecticide). EMBED (for wordpress.com hosted blogs and archive.org item
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