LAWS OF DISTRIBUTION AND DEVELOPMENT OF POTATO VIRUSES AND THEIR INSECTS IN UZBEKISTAN

Abstract

Taking into account the predominance of crop viruses and their vectors in potato seeds for each climatic zone of the soil, the development of control measures makes it possible to grow high-quality seed potatoes. In the conditions of the Zarafshan oasis of Uzbekistan, the first field populations of winged aphids begin to appear at an average air temperature of 23 ° C. Most of them were peach (Mizodes persicae) and melon (Aphiz gossupi Glov) lice. It was observed that the number of wingless lice (20-70 pieces per 100 leaves) was much less than the limit of economic damage. Some wild and cultivated plants are considered " furnaces " of X, S, M and Y viruses in potatoes. Carrying out preventive, organizational, agrotechnical and protective measures on seed potato crops ensures the cultivation of high-quality seed potatoes