Study of the Efficiency of the Entomophage Habrobracon Hebetor Say to Control the Number of Etiella zinckenella Tr. on Soybean Crops

Abstract

Soybean is a valuable crop in many countries of the world. The world sowing area of soybeans is about 100 million hectares. It is grown in the main agricultural regions of 90 countries. To obtain a stable yield level, it is necessary to take into account the activity of arthropod organisms, both harmful and beneficial. The species composition of arthropods of soybean agro enosis in the central zone of Krasnodar Krai has been determined. 227 species of insects and 2 species of mites were identified, including 98 species of phytophages damaging soybeans and 129 species of entomophages. These insects are distributed in 9 orders, 51 families. The most dangerous phytophages of soybeans account for 9.3% of the total number of species. Cotton moth (Helicoverpa armigera Hbn), limabean pod borer (Etiella zinckenella Tr.) and common spider mite (Tetranychus urticae Koch) are widescalephytophages. We assessed the biological efficacy of the ectoparasite Habrobracon hebetor Say against E. zinckenella, this approach does not provide for total destruction, but regulation of the number by restoring the natural mechanisms of regulation. Artificial breeding of the entomophage and its early introduction into soybean cenosis allows us to effectively control the number of E. zinckenella. We described the prospects of using entomohages in green farming technologies.

Damage Intensity of Pod Borer Attack on Seven Soybean Cultivars on Mahogany and Pine Agroforestry

“…The average age of the egg stadia is 4 d, and then it will hatch and come out as yellowish-white caterpillars. According to Agasyeva et al [13], there is an extension of the life cycle E. zinckenella which affects the egg-laying period and makes all caterpillar stages dangerous for plants. After some time, there will be a change in the color of the caterpillars to green with longitudinal red lines.…”