Assessment of the influence of a biorational insecticide of the juvenoid class on the state of fruit cenoses

Abstract

The dominant pests in the apple and plum cenoses are representatives of the tortrix family (Tortricidae) on the apple - the codling moth (Cydia pomonella L.), on the plum - the plum moth (Grapholitha funebrana Mats.), which develop in the region of southern Russia in three full generations. The loss of yield from the vital activity of these phytophages can reach 60-80%. It has been established that the inclusion of a 2-fold application of the insecticide Insegar, WDG in the apple and plum protection system allows preserving 98.9% of apple fruits and 94.6-99.2% of plum fruits. The stimulating effect of the use of insecticides of the juvenile group on the agrobiological indicators of the apple-tree variety Golden Reinders and the plum Kabardinskaya early was revealed, namely, the increase in the length of the one-year growth. It has been proven that the double application of Insegar, WDG in apple and plum plantations does not lead to violation of hygienic standards for the content of fenoxycarb in soil and fruits.