Snigok E. The insect pests of the winter rape and the control of their population in the Polissya of Ukraine

The object of research is winter rape, harmful and useful entomofauna, modern insecticides, varieties, hybrids. The aims of research are to study and improve the system of protection from winter rape pest complex on the basis of their biologic characteristics and technology of growing crops in Polissia of Ukraine; to specify species composition of winter rape phytophagous organisms and find the most dangerous among them;to study the biology of major types of pests, seasonal dynamics of their numbers based on biotic and abiotic factors; to study entomophagous species composition in winter rape crops; to estimate the persistence of rape varieties to major types of phytophagous organisms; to investigate the impact of agricultural practices on the quantity and harmfulness of phytophagous organisms; to evaluate the effectiveness of modern insecticides for seed treatment and spraying. Methods: field and laboratory experiments, statistical and computational methods.Scientific novelty of research lies in the fact that for the first time in conditions of Polissia there has been studied the species composition of insects-phytophagans of winter rape. There have been found 39 species, 6 genera and 16 families. There has been defined a set of the most dangerous species. There have been specified the peculiarities of biology and seasonal population dynamics of the dominant species.For the first time there have been studied the peculiarities of the development and harmfulness of a fruit fly. There has been studied the species composition and carabidofauna and entomofauna. There has been carried out the evaluation of the persistence of varieties and hybrids to the pest of generative organs. There has been grounded the effectiveness of the use of insecticides. Field of application - agriculture, entomology, plant protection.