RESULTS OF THE JOINT USE OF CHEMICAL INSECTICIDES AND THE BIOPRODUCT NODIX INSECTOBACT AGAINST SPRING RAPE PESTS

The research was carried out in order to increase the productivity of spring rape plants based on the combined use of chemical insecticides and the biological product Nodix Insectobact. The work was carried out in the Republic of Tatarstan in 2021-2023. Two field experiments were conducted. The scheme of the first of them provided for independent and paired joint use of the studied biopreparation with the insecticides Hinfur, Imidor Pro and Kruiser for seed treatment, the second - with the preparations Fastak, Kinmiks, Aktara, Beretta for treating vegetative plants. The soil of the experimental plot is gray forest with a humus content according to Tyurin of 4.53%, mobile phosphorus and potassium (according to Kirsanov) - respectively, 160 and 167 mg/kg, pHsol. - 5.8. Mineral fertilizers were applied as a general background (N101P55K77). The spring rape of Ruyan variety was sown. The efficiency of the tank mixture of Kruiser, KS, 10 kg/t + Nodix Insectobact, 3 kg/t against cruciferous flea beetles was 21.7% higher than the pre-sowing seed treatment with Kruiser, KS, 10 kg/t, and 61% higher than the treatment with Nodix Insectobact, 3 kg/t. When treating vegetative plants, the most effective against cabbage moth and rape blossom beetle was the Beretta 300 g/ha + Nodix Insectobact 3/kg/ha variant, in which the degree of infestation by cabbage moth was 69.5% lower than in the variant without treatment, and the degree of colonization of rape blossom beetle 72 hours after treatment was 0.8 pcs/plant, against 6.1 pcs in the control variant of the experiment. The maximum yield (2.84 t/ha) and crude fat content in the experiment were found in the Beretta 300 g/ha + Nodix Insectobact 3 kg/t variant, which exceeded the control by 44% in yield, by 3.1% in seed oil content, and by 2.9 times in vegetable oil yield.