Influence of insurance herbicides on grain productivity of corn hybrids in the Volga region and in the South Urals
The purpose of the study is to study the effect of new insurance herbicides Svarog, Frankorn, Phaeton (Republic of Belarus); Cicero, Crossbow (Kirovo-Chepetsk Chemical Company) in combination with anti-stress drugs for contamination of crops of grain corn hybrids. Field and production experiments were carried out in 2018 - 2020. in the farms of the Orenburg and Samara regions. According to the results of the study, the effectiveness of new herbicides has been proven. Treatment of corn crops with herbicides Svarog, SE 0.5 l/ha (LLC “Frandesa” Republic of Belarus) + Phaeton, KS 1.0 l/ha, Phaeton, 1.5 l/ha, and a tank mixture of the herbicide Elumis, MD 1, 5 l/ha (LLC “Syngenta”), with preparations Fitosporin, AS 1 l/ha (LLC NVP BashInkom), + Borogum M Complex, 1 l/ha + BioneksKemi, 10: 10: 10 + ME, 3 l/ha + Biolipostim, 0,25 l / ha in SPK im. Kirov, Orenburg region in 2018 - 2020 showed the highest grain productivity of the Falcon corn hybrid - 35.6 c / ha. During these years, 35.3 c/ha of grain was obtained using the herbicide Cicero, VDG 50 g / ha + LIP, 0.2 l / ha (Kirovo-Chepetsk chemical company) with a yield in the control of 20 c/ha. The biological effectiveness of these herbicides in weed control was 92.7 - 100 %. On the Delitop hybrid in 2019 at the KHF Galimova R.M., Orenburg region, Faeton herbicides, 1.2 l/ha + Frankorn, KS 0.2 l/ha (Frandesa LLC) and a tank mixture of Elumis, 1, 2 l/ha + Fitosporin, AS 1 l/ha + Borogum M Complex, 1 l/ha + BionexKemi, 3 l / ha + Biolipostim, 0.25 l / ha provided the highest grain yield - 78.3 and 78.1 c/ha, processing costs amounted to 2090 and 4306 rubles/ha, and profit - 59706 and 57152 rubles/ha. Herbicide Cicero, VDG 50 g/ha in a tank mixture with Fitosporin AS 1 l/ha + Borogum M Complex 1 l/ha + BioneksKemi 3 l/ha + Biolipostim 0.25 l / ha showed a grain yield of 75.5 c/ha with the lowest application costs of 1311 rubles/ha and a profit of 58,089 rubles/ha. In 2020, the highest yield of corn grain of the SI hybrid Phenomenon 45.1 c/ha was obtained at Volgar LLC of the Samara region using the herbicide Svarog, SE 0.5 l/ha + Phaeton, KS 1.0 l/ha, costs for processing - 1503 rubles/ha.