Biological Systems: Theory and Innovation

Today, throughout the world, the use of chemicals is the main method of combating plant diseases both before and after harvest. To date, there are certain problems with each fungicidal drug against "gray rot" in Ukraine. The solution to these problems can be the use of biopesticides, such as the researched drug Taegro, WP. To achieve and evaluate the tasks, such scientific research methods were used as: the method of analysis, synthesis, induction, deduction and systematization, natural experiment, physico-chemical, organoleptic, sanitary-microbiological, methods of statistical analysis and mathematical modeling. The technical efficiency of the fungicide Taegro WP in suppressing the damage of strawberry berries by gray rot in plantations, with the rate of its use of 0.18 and 0.37 kg/ha, was 70.60 and 81.05%, respectively. The use of the Taegro WP with a application rate of 0.18 and 0.37 kg/ha helped to increase the yield of strawberries to 10.05, 10.34 t/ha, while the yield in the control variant was 8.65 t/ha. It was noted that after the application of the fungicide Taegro WP with a rate of 3.7 g/ 5 l of water / 1 acre, an increase in the level of total chlorophyll in the leaves of strawberries of the garden variety Alina was observed, which was 457.5-667.5 units, which is 68.5 % higher compared to the control. In a number of field experiments, it was established that the fungicide Taegro WP with application rates of 0.18 and 0.37 kg/ha in the conditions of industrial production and with a consumption rate of 3.7 g/ 5 l of water / 1 acre in the conditions of private auxiliary farms has a high technical efficiency against strawberry damage

biological efficiency; pesticides; strawberry; gray rot