Adults hibernate under tree bark, in cracks in posts, beneath debris or other suitable shelter. However, modern apple orchards offer few shelters and weevils often migrate in numbers to suitable places in adjacent woodland, hedgerows and ditches. The …
Adults The normal method of determining the risk of damaging infestation by apple blossom weevil is to assess populations of adults shortly after emergence at bud-burst in March using the beating method. For each beat sample, a branch is tapped sharply …
The migration of the flight of apple blossom weevil adults occurs in March on warm, sunny days when daytime temperatures reach 12-20 ° …
Tortrix moth caterpillars can occasionally form a capped blossom rather like the apple blossom weevil. Apple bud weevil (Anthonomus piri) : The adult of the apple bud weevil is very similar in appearance to the adult apple blossom weevil, but is a …
Chemical control The usual method of control of apple blossom weevil is to apply a spray of a broad-spectrum insecticide against adults at bud burst when most adults have migrated into the apple crop but before significant egg-lying has occurred. The …
The apple blossom weevil is eaten by small birds such as tits but the most important natural enemies are two species of parasitic wasp. Because small numbers of apple blossom weevil can be tolerated economically, these parasitic wasps might be important …
Duan, J. J., Weber, D. C., Hirs, B., & Dorn, S. 1996. Spring behavioural patterns of the apple blossom weevil. Entomologia Experimentalis et Applicata 79, 9-17. Kalinova, B., Stransky, K., Harmantha, J. Ctvrtecka, R. & Zd’arek, J. 2000. Can chemical cues …
Recognition Damage Life cycle Monitoring Forecasting Other pests with which apple blossom weevil may be confused Control methods Natural enemies Further …
Apple blossom weevil was one of the most destructive apple pests before the advent of insecticides. In the past it was uncommon in conventional commercial apple orchards as it was controlled very effectively with organochlorine insecticides. The last of …
Adults emerge on sunny days around the blossom time of apple. After mating, eggs are laid throughout the blossom period singly in the side of the receptacle of apple flowers. The eggs hatch in 1-2 weeks, longer in cold weather. The young larva burrows …
Niab
Park Farm Campus
Villa Road
Histon
Cambridge
CB24 9AT, UK
Tel: +44(0)1223 342200
Email: [email protected]
