author(s)
Saliga Gazi and Ilhama Safarova

abstract
The article provides information on Agrotis segetum bioecology, phenology and damage rate of autumn noctuidae, which is one of the most dangerous pests of sugar beet, as a result of studies conducted in sugar beet fields in Imishli region of Azerbaijan during 2015-2017 years. Studies have revealed that caterpillars of the first-generation are operating in areas from late May to early July. By the end of June, they penetrate the depths of 3-5 cm in the soil, and make special caves and bubble down there. In the summer, the development of pups ends for 7-9 days, and the second generation of butterflies begin to fly. The second-generation of butterfly flies to areas by the end of September. Turnip moths' egg-laying appears in the second decade of July and continues until September. The roles of entomophages such as Trichogramma evanescens Westwood, 1836, Habrobracon hebetor Say, 1836 and Apanteles kazak Tel, 1988 are great in regulating the number of pests in sugar beet fields.