Technical efficiency of herbicide tank mixtures under sunflower cultivation in the northern Steppe of Ukraine

Y. Tkalich, O. I. Tsyliurik, V. Kozechko, S. Shevchenko, N. Honchar, Yu. M. Rudakov
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Abstract

At the current weed infestation level of chernozem, it is almost impossible to grow sunflowers without the regulated use of the most effective herbicides with different action spectrum on weeds. It was established that tank mixtures of ethametsulfuron-methyl herbicides (750 g/kg) – 25 g/ha + aclonifen (600 g/l) – 1.2 l/ha + surfactant Trend 90 – 300 ml/ha and ethametsulfuron-methyl (750 g/kg) – 25 g/ha + aclonifen (600 g/l) – 1.5 l/ha + surfactant Trend 90 – 300 ml/ha provided the highest technical efficiency and the lowest air-dry mass of weeds in the oilseed agrocenosis. Their technical efficiency was 61.2–65.8%. Almost all variants of herbicide tank mixtures showed a high phytotoxic effect on green amaranth (Amarantus retroflexus L.) – 51-61%, common ragweed (Ambrosia artemisiifolia) – 52–76%, field bindweed (Convolvulus arvensis) – 100%, yellow foxtail (Setaria pumila L.) was the less controlled – 21– 31%. The variants with the application of herbicide tank mixtures of ethametsulfuron-methyl (750 g/kg) – 25 g/ha + aclonifen (600 g/l) – 1.2 l/ha + surfactant Trend 90 – 300 ml/ha showed the highest indicators of the yield structure elements, here the 1000 seed weight was 73.1 g at a maximum basket diameter of 31.5 cm. These indicators were less in 1.2–1.7 times for other studied variants with the herbicide tank mixtures. When application of the tank mixtures of ethametsulfuron-methyl (750 g/kg) – 25 g/ha + aclonifen (600 g/l) – 1.2 l/ha + surfactant Trend 90 – 300 ml / ha and ethametsulfuron -methyl (750 g/kg) – 25 g/ha + aclonifen (600 g/l) – 1.5 l/ha + surfactant Trend 90 – 300 ml/ha, it was obtained the maximum yield of sunflower seeds 2.15 and 2.07 t/ha, respectively. Other variants with herbicides and their tank mixtures had significantly lower yield of sunflower seeds – by 23–27 %. Key words: sunflower, weeds, herbicides, tank mixes, yield, technical efficiency
乌克兰北部草原向日葵栽培中除草剂罐混合剂的技术效率
在黑钙土目前的杂草侵染水平下,如果没有对杂草有不同作用谱的最有效除草剂的调控使用,向日葵几乎不可能生长。结果表明,甲乙磺隆-甲基除草剂(750 g/kg) - 25 g/ha +阿克罗尼芬(600 g/l) - 1.2 l/ha +表面活性剂趋势90 ~ 300 ml/ha和甲乙磺隆- 750 g/kg - 25 g/ha +阿克罗尼芬(600 g/l) - 1.5 l/ha +表面活性剂趋势90 ~ 300 ml/ha的罐式混合除草剂技术效率最高,空气干质量最低。技术效率为61.2 ~ 65.8%。对绿苋菜(amantus retroflexus L.)、豚草(Ambrosia artemisiifolia)、野花(Convolvulus arvensis)、黄尾草(Setaria pumila L.)的毒效分别为51 ~ 61%、52 ~ 76%、100%和21 ~ 31%。施用乙甲磺隆-甲基(750 g/kg) - 25 g/ha +阿克隆尼芬(600 g/l) - 1.2 l/ha +表面活性剂90 ~ 300 ml/ha的混合除草剂品种的产量结构要素指标最高,其中1000粒重为73.1 g,最大筐径为31.5 cm。与除草剂罐混合的其他变异相比,这些指标要低1.2 ~ 1.7倍。当施用乙胺磺隆-甲基(750 g/kg) - 25 g/ha +阿克罗尼芬(600 g/l) - 1.2 l/ha +表面活性剂趋势90 ~ 300 ml/ha和乙胺磺隆-甲基(750 g/kg) - 25 g/ha +阿克罗尼芬(600 g/l) - 1.5 l/ha +表面活性剂趋势90 ~ 300 ml/ha时,葵花籽产量最高分别为2.15 t/ha和2.07 t/ha。其他使用除草剂及其罐内混合物的品种的葵花籽产量显著降低了23 - 27%。关键词:向日葵,杂草,除草剂,罐混料,产量,技术效率
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