In this article diseases of the winter and summer crops which manifestation it is necessary to expect on the Crimean fields in May are listed.
Forecast
Forecast
Weather conditions of the spring-and-summer period of last year developed on development of diseases of winter and summer crops adversely. But, despite it, damages of crops by them were noted, and, therefore, farmers shouldn’t lose vigilance and this year.
THE ROOT DECAYED
In crops of grain crops last year met both gelmintosporiozny, and tserkosporiozny the root decayed. However gelmintosporiozny root decay had the greatest distribution. By it it was damaged from 3 to 10 % of plants, with illness development to 4 %.
As a whole across the Crimea root gnilyami it was struck 12,9tys. hectare, their distribution was ochagovy.
From pyatnistost in crops of winter and summer crops the greatest distribution had gelmintosporioz, septorioz. By Gelmintosporioz it was struck from 5 to 18 % of plants, with illness development to 2 %.
Dry hot weather in vegetation didn’t promote development of diseases on an ear.
MEALY DEW
Development of mealy dew in crops winter was noted on 5,8ga that made 1,3 % of total area of crops. Weather conditions didn’t promote its development.
GOLOVNYA ON CORN
Temperature drops of air and waterings promoted wide manifestation bubbly and dusty golovni on corn. Hybrids of corn of import production were subject to a disease.
Nowadays it is necessary to consider that in the nature the infection golovni and that for crops the seeds of the Dutch seed farming which have not been zoned in the conditions of Ukraine use collected. Proceeding from it, it is possible to assume that if conditions will favor, and this year it is necessary to expect manifestation on the Crimean fields of these diseases.
V. PERMYAKOV,
chief of the State inspection
protection of plants.