CEREAL LEAF BEETLE OULEMA IN АGROCOENOSIS OF CEREAL CROPS OF BELARUS
Abstract
The study of cereal leaf beetle in Belarus shows that such species of leaf beetle as o. gallaeciana Heyd. = (oulema lichenis Voet.) and o. melanopus L. belong to dominating cereal crop pests from leaf beetle family (Chrysomelidae). In аgrocoenosis located in the Central agroclimatic zone of the republic species-double o. duftschmidi Rdt. of o. melanopus L. is found. It’s established that prevalence of cereal leaf beetle and biology of its development is influenced by the change of environmental conditions in the republic, an agroclimatic zone of crop cultivation, host-plant features, granulometric soil composition, soil temperature during winter and spring periods, and air temperature at egg laying, larva and pupa development stages. Harmfulness is studied, and harmfulness thresholds for cereal crops, different agroclimatic zones of the republic and wheat varieties of the domestic breeding are developed. The results of biological and economic effectiveness of insecticides in the decrease of the number and harmfulness of pests are presented.
About the Authors
S. V. Boyko
Институт защиты растений
Belarus
Belarus
O. F. Slabozhankina
Институт защиты растений
Belarus
Belarus
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