Cleorina spp. Crops: Apples, walnut Why is it a problem? Cleorina leaf beetles are not normally a serious problem in apples but can cause localized damage to developing apples and occasionally completely defoliate young trees. Where and when is it a problem? This beetle can be commonly found in all …
Argyresthia spp. Crop: Apple Why is it a problem? Larvae burrow into developing apples, resulting in an early fruit drop. Dissection is generally needed to confirm that they are the cause of the early fruit drop. This is rarely done, so losses due to this insect are probably underreported. Where …
Agalope hyalina Crop: Apple Why is it a problem? Large numbers of larvae on young fruit can result in considerable losses through fruit drop. Market value can also be reduced through distortion of fruit shape caused by partial feeding on the apple. Insecticides are needed to manage severe outbreaks. Feeding …
Apple is an important cash crop since commencing in Bhutan in the early 1960s. It is now second to citrus in terms of production (8.032 MT in 2013). The most common varieties to be grown are Red Delicious, Royal Delicious and Golden Delicious. About half the apples grown (54% in …
