In article wreckers and the diseases expected on plantations of vineyards in 2008 which will be the most harmful are listed.
Forecast
Forecast
Mildyu
Dry, hot weather in vegetation of grapes of 2007, adversely affected development mildyu. The manifestation beginning mildyu on leaves noted in June, on sites of the vineyards located about forest belts and in lowered places. The disease had no economic injuriousness. The majority of farms of the Crimea in fight with mildyu carried out only 1-2 preventive processings.
For development mildyu the warm, damp spring and summer will be favorable. In 2008 intensity of development mildyu and oidiuma will depend on weather conditions.
Crimean skosar
In 2007 on vineyards Crimean skosar developed ochagovo. With it 12 % of the surveyed areas, 20 % of bushes were populated. Number skosarya was up to standard of last years and made 1,3 copies on a bush.
During the autumn period the wrecker is revealed for 19 % of the surveyed areas, with number in places of wintering 0,6 copies on a bush.
In 2008 development and injuriousness Crimean skosarya, it is necessary to expect in the steppe regions of the Crimea.
Grozdevy listovertka
In connection with the developed weather conditions in 2007 the grozdevy listovertka developed in three full generations. On the Southern Coast of the Crimea, in places of late and long harvesting, complete development of the fourth generation was noted not.
Settling in vegetation made 43 % of the surveyed areas of vineyards. The most harmful and the first generation of the wrecker was numerous. The departure of butterflies began on May 10, intensity of summer – 19, at most 50 copies in a feromonny trap in days.
Damage of inflorescences of grapes by caterpillars of the first generation made 5 %.
Autumn inspection of 2007 revealed settling by the wrecker more than 28 % of the surveyed areas of the grapes, about 6 % of bushes, with number of 1,2 dolls on a bush in wintering places.
In 2008 under favorable conditions of rewintering, the most harmful and numerous the first generation of a grozdevy listovertka is expected.
Century PERMYAKOV, chief of the State inspection of protection of plants.