Promising tank mixtures of herbicides to protect soybean crops

Abstract

Presented the results of the study of biological, economic efficiency and safety for the culture of tank mixtures Flex 1.3 l/ha + Classic Forte 0.025 kg/ha + adjuvant Trend 90 0.2 l/ha and Flex 1.3 l/ha + Eventus 1.3 l/ha + Trend 90 0.2 l/ha with subsequent application (3 days after the first treatment) graminicide Fusilade Forte 1.5 l/ha when processing soybeans in the phase of 2–3 triple leaves in conditions of severe clogging of the mixed type. The experimental mixtures were compared with the standard version – Flex 1.5 l/ha + Trend 90 0.2 l/ha, after 3 days – Fusilade Forte 1.5 l/ha. Tank mixtures, especially the Flex + Eventus combination, turned out to be less phytotoxic for the crop, contributed to more effective and prolonged control of perennial dicotyledonous weeds. In all variants of the experiment with the use of herbicides, within 3–8 days after treatment, the complete death of weed species present in the field, which are in the early stages of growth and development, was observed. The presented tank mixtures in combination with the herbicide showed high overall herbicidal activity, safety for the crop, contributed to obtaining the maximum increases in the yield of soybean seeds in the experiment – 0.95–1.07 t/ha (on average over three years), ensured the achievement of the greatest economic efficiency – 19.3–23.4 thousand rubles/ha and can be recommended for use in industrial soybean production.