Cholovsky S. The Cereal Aphids and Leafhoppers on a Winter Wheat and Substantiation of Restriction Methods of their Number in Northen Steppe of Ukraine

The cereal aphids, leafhoppers and them entomophages on a winter wheat. To improve the integrated pest managment of a winter wheat from cereal aphids, leafhoppers and seedling infections by a barley yellow dwarf virus (BYDV). Laboratory and field; methods of dispersional and correlational analysis of the data. The species of cereal aphids, leafhoppers, and them entomophages on a winter wheat in Northen Steppe of Ukraine are identified. Is determined, that harmfulness of cereal aphids are increased in connection with transmition of BYDV. At the first time dynamics of leafhopper populations in a winter wheat sowings is investigated and two types of dynamics of their number are revealed. Is investigated, that in the spring and summer season at an interrelation aphidophages and aphids 1:40 - 1:60 necessity for insecticide applications is disappeared. The complex steady varieties of a winter wheat against the cereal aphids, leafhoppers and BYDV infection are determined. At the first time technology and rules of application insecticide for chemical seed treated with Gaucho, 70 % w.p. on a winter wheat are developed. The recommendations of sowings protection from an autumn complex of sucking pests have passed industrial check in a Farm station "Dniepr" (Dniepropetrovsk province). Sphere of use is an agrarian farms of Ukraine, agriculture.