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INTERNATIONAL AGRICULTURAL JOURNAL
Journals / INTERNATIONAL AGRICULTURAL JOURNAL / Issue 7, 2025 / Efficacy of new herbicide Cornegi Plus based on 4 active ingredients for maize protection
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EFFICACY OF NEW HERBICIDE CORNEGI PLUS BASED ON 4 ACTIVE INGREDIENTS FOR MAIZE PROTECTION Efficacy of new herbicide Cornegi Plus based on 4 active ingredients for maize protection

Published in INTERNATIONAL AGRICULTURAL JOURNAL · Pages 949–952 · Rubric: Scientific support and management of agrarian and industrial complex
DOI: https://doi.org/10.55186/25876740_2025_68_7_949
Received: 25.08.2025 Accepted: 24.09.2025 Published: 15.12.2025
Authors
AR
Artem Golubev
ORCID
ABSTRACT
The study was conducted to investigate biological efficacy and safety of new herbicide Cornegi Plus, OD (terbuthylazine 250 g/L + 2,4-D acid /2-ethylhexyl ether/ 80 g/L + clopyralid /2-ethylhexyl ether/ 40 g/L + nicosulfuron 30 g/L) for maize protection from 4 groups of weeds: annual and perennial dicotyledonous and annual and perennial monocotyledonous. Trials were conducted in 2022 and 2023 in 4 regions: in Moscow region (hybrid Voronezhsky 279 SV); in Krasnodar region (hybrid Krasnodarsky 291 AMV); in Astrakhan region (hybrid Mashuk 355 MV); in Voronezh region (hybrid Kosynier - in 2022; hybrid DKS 3730 - in 2023). Trials were carried out in accordance with «Guidelines for conducting registration trials with herbicides, 2020». The weeds were counted using the quantitative-weight method. The efficacy of herbicide was calculated relative to the untreated check. Weeds in maize without herbicide treatments in experiments ranged from 55.1 to 213.9 species/m2. The reduction of weeds by use herbicide Cornegi Plus, OD was significant in all regions and in Krasnodar region reached 100%. New herbicide Cornegi Plus, OD was more effective than standard Cornegi, SE in suppressing such annual dicotyledonous weeds as Ambrosia artemisiifolia, Matricaria perforata and Polygonum persicaria, as well as such perennial dicotyledonous weeds as Cirsium arvense and Lactuca tatarica. The highest increases in grain yield when using 1.5-2.0 l/ha of herbicide Cornegi Plus, OD were noted in 2023: at hybrid DKS 3730 in Voronezh region - 24.0-24.5 c/ha (when untreated check yield was 71.6 c/ha) and at hybrid Krasnodar 291 AMV in Krasnodar region - 21.6-22.7 c/ha (when untreated check yield was 25.3 c/ha). In the Moscow region, the increase in green mass of hybrid Voronezh 279 SV amounted to 247-277 c/ha (when untreated check yield was 150 c/ha).
KEYWORDS
maize, herbicides, weeds, terbuthylazine, 2, 4-D, clopyralid, nicosulfuron, oil dispersion
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