THE ROLE OF THE TEMPERATURE FACTOR IN THE ONTOGENESIS OF COLORADO POTATO BEETLE (LEPTINOTARSA DECEMLINEATA) IN THE CONDITIONS OF KURGAN REGION
Potatoes are among the most important crops. In the world produc-tion of agricultural products potatoes is one of the first places after rice, corn, wheat. Potatoes are used as food, fodder and technical crops. Depending on this, the quality requirements are not the same. The Colorado potato beetle is widespread in the Urals, occupying 73.8% of the surveyed areas. Research of reactions of the Colorado potato beetle on temperature in the conditions of the Kurgan region was not carried out earlier. Meanwhile, such ob-servations are fundamental to predict the reproduction and settlement of the pest, the stages and timing of its development, they can be used in the development of systems of protection against phytophagus. Temperature in combination with trophic factors affects all aspects of life of the pest, determining the speed of its development, puberty, reproduction and feed intake, as well as fertility and survival during the period of activity. Studies of the Colorado potato beetle reactions the temperature in the con-ditions of the Kurgan region have not been carried out previously. Meanwhile, such observations are fundamental for predicting the breeding and spreading of the pest, the stages and timing of its development, and they can be used in the development of protection systems against the phytophagan. This article examines the influence of the thermal factor on the develop-ment of the Colorado potato beetle ( Leptinotarsa decemlineata ) in the Kurgan re-gion in the period from 2013 to 2017. The analysis of sum accumulation of the of effective temperatures in applications to the development of the first and second generation of the pest, the possibility of forming a third generation is given.