Authors: D. N. ABDRIISOV, regional representative for North Kazakhstan region, Shchelkovo Agrokhim LLP, (68 Kazakhstanskoi pravdy, 150007, Republic of Kazakhstan, Petropavlovsk),
V. V. RZAEVA, candidate of agricultural sciences, associate professor, State Agrarian University of Northern Trans-Urals (7 Respubliki Str., 625003, Tyumen)
Keywords: herbicides, herbicide mixtures, weed infestation, weed plants, spring wheat, yield.
Abstract: The article presents the results of studies on the action of herbicides and their mixtures on the contamination of crops and the yield of spring wheat. Research on the effect of herbicides and their mixtures on the contamination of crops and the yield of spring wheat was carried out in LLP “Atameken-agro” of North Kazakhstan region. Herbicides against dicotyledonous weeds reduced weed infestation by 87.5 % (herbicide “Zenit”) and 78.0 % (herbicide “Esteron”), the number of monocots increased by 2 pcs/m2. Tank mixtures of herbicides contributed to the destruction of both monocotyledonous and dicotyledonous weeds. More effective in the fight against weeds worked tank mixture of herbicides “Argo” + “Zenit”, where the death was 86.7 %, the combination of “Puma Turbo” + “Esteron” ensured the death of weeds by 77.0 %. The difference in the degree of clogging between the applied herbicides “Argo” and “Puma Turbo” was 0.9 %, i.e. the herbicide “Argo” worked more effectively; between the herbicides “Zenit” and “Esteron” – 1.1 %. The degree of clogging in the application of the tank mixture of herbicides “Puma Turbo” + “Esteron” is higher by 1.1 %. The use of herbicides provided an increase in yield of 0.3–0.5 t/ha (17.6–29.4 %) for options with the use of herbicides “Argo” and “Puma Turbo”, 0.6–0.8 t/ha (35.3–47.1 %) with herbicides “Zenit” and “Es- teron”, and 1.1–1.4 t/ha (64.7–82.4 %) using a tank mixture of herbicides as a result of less contamination. The herbicide Argo provided an increase of 0.2 t/ha more than the herbicide “Puma Turbo”, in the variant with the herbicide “Zenit” above 0.2 t/ha compared with the herbicide “Esteron” and the tank mixture of herbicides “Argo’ + “Zenit” provided a large increase in relation to the control (1.4 t/ha) and the difference between these options was 0.3 t/ha.
