In the field experiment in 2021-2023, the biological effectiveness of the insecticides Tayra, CE and Borei Neo, CE in the control of Colorado potato beetle (Leptinotarsa decemlineata) when growing different varieties of eggplant (Solanum melongena) in the soil and climate of the Astrakhan Oblast was evaluated. It was shown that the use of insecticides significantly reduced the number of the Colorado potato beetle. The highest biological efficiency was recorded after double treatment with Borei Neo with a consumption rate of 200 mg/ha. On the 3 day after treatment, a decrease in the number of pests was observed by 87.5%, on the 7 day - up to 90.0, on the 14 day - 76.9%. The Borei Neo preparation not only effectively destroyed the pest, but also increased the yield of eggplants. At the same time, the maximum nitrate content in eggplants, equal to 146 mg/kg, was recorded in the center of the fruit in the application of Borei Neo, CE and mineral fertilizers at a dose of N180P90K60. No excess of the permissible nitrate level (300 mg/kg) was recorded.
A. N. Bondarenko (Thu,) studied this question.