Abstract
In 2018 and 2019 an experiment was conducted using the block method with 12 herbicides in the experimental field of the Maize Research Institute – Knezha. The studies were performed with a maize hybrid Knezha 613 – group 500-600 by FAO, cultivated without irrigation. We studied 8 systems of herbicides which included 6 soil preparations: Adengo 465 SK (isoxaflutole) at a dose of 350 ml/ha; Merlin Flex 480 SK (isoxaflutole) at a dose of 420 ml/ha; Spectrum (dimetenamid – P) at a dose of 1400 ml/ha; Gardoprim plus gold (S-metolachlor + terbutilazin) at a dose of 4500 ml/ha; Dual Gold 960 EK (S-metolachlor) at a dose of 1500 ml/ha and Stomp NEW 330 EK (pendimetalin) at a dose of 4000 ml/ha. The studies included foliar preparations, applied in a phase fourth-fifths leaf of the crop, after the soil ones: Elumis OD (nicoslfuron + mesotrion) at a dose of 2000 ml/ha; Aminopielik 600 SL (2,4-D amine salt) at a dose of 1200 ml/ha; Lumax (S-metolachlor + terbutilazin + mesotrion) at a dose 3000 ml/ha; Matоn 600 EK (2,4-D ester) at a dose of 1100 ml/ha; Laudis OD (tembotrione) at a dose of 2000 ml/ha. Under the test conditions, the herbicidal system Dual gold 960 EK at a dose of 1500 ml/ha and Elumis OD et a dose of 2000 ml/ha is the most efficient: destroying 94.8% (2018) and 94.4 (2019) of the common weeds.
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