Biological and economic efficiency of the herbicide global, ws in alfalfa open sowings

Abstract

   The paper presents the results of the studies for 2023–2024 on the application of the herbicide Global, WS (active ingredient imazamox, 40 g/l) to alfalfa open sowing at the first-second triple leaf stage. It’s established that, when it is applied in a dose of 0.75–1.2 l/ha in its pure form and together with SAA (Kornet, 0.2 l/ha), it is not inferior to the reference preparation Pulsar, WS (1.0 l/ha) in terms of biological efficiency and reduces the number of annual dicotyledonous weeds by 58.8–78.6 %, their weight - by 52.7–74.4 %; infestation with cereal weeds is reduced by 100 %. A decrease in weed infestation of alfalfa increases green mass yield by 9.8–21.7% and dry matter by 9.3–19.4 % on average over two years.