Shushkivska N. The biology of beetles tortroises of beet agrobiocenosis and substantiation of protective measures against them under conditions of the Central Forest-Steppe zone of Ukraine

The object - the plants of beet, weeds, beetles tortroises, insnsecticides by different means of application. The aim - to study the biological featuries of beetles tortroises and to improve on the basis of this control quantily. The methods - vegetative, laboratory, field. The novelty - the dynamics of quantity the beetles tortroises, influense condition of weather and damage has been determine. In larvas and chrysalises the beetles tortroises for the first time has been ascertain two spesies parasitic hymenoptera Teleopterus erxias Walker, famyly Eulophidae and hyperparasite famyly Pteromalidae.The interrelation of beetles tortoises in agrobiocenosis and feature of invading sugarbeet field's has been established.The parameters of injuriousness of beetles tortoises in dependence of number, phases of development and state of plants are established. Dependence between a degree of damage of a leaf area of sugar beet by beetles tortoises, mass of root crops and contain sugar. The system of measures of protection of sugar beet from beetles tortoises is complemented. The results of researches - are used in various patterns of ownership, scientific process and research work. Field - agronomics.