Изучение эффективности применения нового гербицида бенито на посевах сои

Abstract

Field trials with the herbicide Benito (bentazone, 300 g/l, colloidal solution concentrate) were conducted on soybeans in three climatic regions of Russia during 2018. We tested the opportunity to reduce the application rates of the bentazone (600–900 g a.i. / ha) as compared to the standard Basagran (bentazone, 4800 g/l, SL; 720–1440 g a.i. / ha). The experiments followed the «Guidelines for registration trials of herbicides in agriculture» (2013). Weeds were counted and weighted on each plot. Efficiency of herbicide was determined by the Abbott formula. In Altay region biological efficiency both, herbicide Benito and standard Basagran, reached 100 %, regardless of application rates. In Astrakhan region, on the contrary, there was a clear correlation of biological efficiency of both herbicides and application rates. Efficiency of 2.0 l / ha of herbicide Benito was similar to the use of 1.5 l / ha of the standard Bazagran; efficiency of 3.0 l / ha of studied herbicide was similar to the use of 3.0 l / ha of standard Bazagran. In Krasnodar region efficiency of 2.0 and 3.0 l / ha of herbicide Benito approached the efficiencies of 1.5 and 3.0 l / ha of standard Basagran, respectively. ueous solution and allows reducing the application rates of bentazone by 17.0–37.5 % without reducing processing efficiency.