Harmfulness of an ordinary bread sawfly (Cephus pigmaeus L.) in the conditions of the Priazov zone of the Rostov region

The article reflects the results of three years of research on the biology and harmfulness of an ordinary bread sawfly. Experimental data on the effect of the pest on the elements of the structure of the winter wheat crop are presented. Studies have shown that the high level of agricultural technology allows to do without chemical protection of crops from cereal sawflies', even with their high number, since at the optimum level of agrotechnics when forming the crops' with normal stems, plant yield losses do not exceed the permissible level.