Kabanets V. Basic pests of hemp, and control of their quantity in the еast Polesia of Ukraine

In dissertation the results of researches are expounded on clarification of specific composition hemp basic pests and improvement of the ecological oriented system of protecting from them in east Polesia of Ukraine. It was established the structure of entomocomplex of hemp agrocoenosis and determined the trophic specialization of insects. It was defined specific composition of dominant most harmful insect-phytopfages on the hemp field and investigated the features of their biology and dynamic of numbers in the conditions of intensive technology of growing. It was estimated the firmness of modern biotopes of hemp against damages by dominant phytophages. It was established efficiency of modern insecticides at the pre - treatment of seeds and spraying of crops. It is noted, that the use of insecticides Cruiser 350 FS, 35 t.к.s. (tiametoksam), 350 g/l for treatment of seed a dose 2,0 l/t was most ecologically oriented and provided reliable and protracted control of numbers of hemp fleas at level that did not exceed ELD. It was determined the economic efficiency of application of insecticides at different methods and charts of their use against the hemp pests.