Herbicidal Efficacy of Haloxyfop-P-Methyl for Post-Emergence Grassy Weeds Control in Groundnut (Arachis Hypogaea L.)

Citation: Osman.Y. Mohammed, Ahmed M. El Naim, Elgilani A. Abdalla, Dafalla A. Dawoud, Gamar Aldawla Abdel Motalib Ahmed, "Herbicidal Efficacy of Haloxyfop-P-Methyl for Post-Emergence Grassy Weeds Control in Groundnut (Arachis Hypogaea L.)", Universal Library of Advances in Agriculture, Volume 01, Issue 01.

Copyright: This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A post emergence herbicide that will reduce labors demand and cost is the desire of crops farmer. This is because hand and hoe weeding is expensive, need more labors and due to scarcity of labors, particularly at the peak of the season. Hoe weeding may damage roots and pegs, hence reduce groundnut yield. In view of this the performance of haloxyfop-P-methyl was evaluated on groundnut crop in Sudan. An experiment was conducted during summer seasons of 2021/2022 and 2022/2023 at Elobied Research Station Farm, Sudan, under light soil, rain fed conditions to evaluate the herbicidal efficacy of Haloxyfop-p-methyl (Agroharvest 10.8 EC) for post-emergence grassy weed control in groundnut (Arachis hypogaea L.) .The herbicide was applied at 0.100, 0.200, 0.300 and 0.400 L/fed (1 fed= 0.42 ha), 3 weeks after sowing using a knapsack sprayer at a volume rate of 80 to 90 L/fed. Grassy weed, weeded and unweeded controls were included for comparison. Some herbicide treated plots received one supplementary hand weeding four weeks after application. In both seasons, Haloxyfop-p-methyl at 0.100 and 0.200 L/fed without supplementary weeding displayed poor to satisfactory control of grassy weeds early and late in the season. While the dose of 0.3 and 0.4 l/fed resulted in excellent (86-92%) and good to excellent (77-84%) control of grasses in the first and second season, respectively. The herbicides treatments significantly reduced weed biomass and weed ground cover compared to the weedy and grassy weeds controls in both seasons. Unrestricted weed growth significantly reduced groundnut pods yield by 51-57% in comparison to the weedy and grassy weed control. The herbicide treatments significantly increased groundnut pods yields in comparison with the weedy control. Haloxyfop-p-methyl product at 0.3 and 0.4 l/fed with one supplementary hand weeding revealed groundnut pods yield comparable to the weeded control.

Keywords: Groundnut, Weed Control, Haloxyfop-P-Methyl, Herbicides.

https://doi.org/10.70315/uloap.ulaag.2025.0101005