European Grape Moth

(Polychrosis botrana). a moth of the Tortricidae family; a harmful grape pest.

The European grape moth has a wingspan of 10–13 mm; the front wings are speckled with a pattern of bright stripes and greenish-gray, yellowish, and blue-gray spots. It is found in western Europe and the USSR (in the southern Ukraine, the Caucasus, Transcaucasia, the Lower Volga Region, and Middle Asia). There are three generations per year (four in Middle Asia). The pupa winters in cracks in the bark of grapevines and in the wooden vine-supports. The moths deposit their eggs on the buds in spring and on the fruit in summer. First-generation caterpillars enmesh the flower clusters in a web and eat the buds, blossoms, and gynoecia; caterpillars of the later generations eat the fruit. Gray mold rot develops on the damaged mature grapes. The grape moth can be combated by the cultivation of moth-resistant strains of the grape, by growing grapes on trellises, by using insecticides where grapes are grown, and by cleaning the old bark from the trunks.

REFERENCE

Prints, Ia. 1 Vrediteii i bolezni vinogradnoi lozy.2nd ed. Moscow. 1962.

单词	european grape moth
释义	European Grape Moth European Grape Moth (Polychrosis botrana). a moth of the Tortricidae family; a harmful grape pest. The European grape moth has a wingspan of 10–13 mm; the front wings are speckled with a pattern of bright stripes and greenish-gray, yellowish, and blue-gray spots. It is found in western Europe and the USSR (in the southern Ukraine, the Caucasus, Transcaucasia, the Lower Volga Region, and Middle Asia). There are three generations per year (four in Middle Asia). The pupa winters in cracks in the bark of grapevines and in the wooden vine-supports. The moths deposit their eggs on the buds in spring and on the fruit in summer. First-generation caterpillars enmesh the flower clusters in a web and eat the buds, blossoms, and gynoecia; caterpillars of the later generations eat the fruit. Gray mold rot develops on the damaged mature grapes. The grape moth can be combated by the cultivation of moth-resistant strains of the grape, by growing grapes on trellises, by using insecticides where grapes are grown, and by cleaning the old bark from the trunks. REFERENCE Prints, Ia. 1 Vrediteii i bolezni vinogradnoi lozy.2nd ed. Moscow. 1962.
随便看	heisting heist it heist it up heist me heist me up heist one heist one up he is too much he is too much! heists heistse zwemclub arduas heist somebody heist somebody up heist someone heist someone up heist something heist something up heist them heist them up heist us heist us up heist you heist you up hei-t hei/(t)