Evaluating postemergence herbicides for broadleaf weed control in irrigated bread wheat (Triticum aestivum L.)
Journal Title: Journal of Experimental Biology and Agricultural Sciences - Year 2017, Vol 5, Issue 0
Abstract
The objective of this research was to study the effect of broadleaf herbicide treatments and grass + broadleaf herbicides on annual broadleaf weeds and bread wheat yield. Eight on-farm weed control trials were conducted in bread wheat from 2014-15 to 2016-17 in Tadla and Doukkala irrigated perimeters, Morocco: 3 trials using broadleaf herbicides and 5 trials using premix or tank mix of grass and broadleaf herbicides. In 3 trials, 9 broadleaf herbicides (metsulfuron-methyl 6 g ha-1, tribenuron-methyl 9.375 g ha-1, amidosulfuron 15 g ha-1 + iodosulfuron-methyl-sodium 3.75 g ha-1, aminopyralid 9.9 g ha-1 + florasulam 4.95 g ha-1, dicamba 120 g ha-1 + 2,4-D 344 g ha-1, florasulam 3.75 g ha-1 + 2,4-D 180 g ha-1, flumetsulam 5 g ha-1 + florasulam 3.75 g ha-1, triasulfuron 6.15 g ha-1 + dicamba 98.85 g ha-1, and tribenuron-methyl 5 g ha-1 + thifensulfuron-methyl 10 g ha-1) caused no injury to bread wheat, reduced 80 to 100% density and shoot biomass of broadleaf weeds, and provided wheat grain yields up to 8.0 Tons ha-1 compared to the untreated plots. In 5 trials, 12 premix or tank mix of grass and broadleaf herbicides reduced shoot biomass of broadleaf weeds up to 100% and provided wheat grain yields up to 9.3 Tons ha-1 compared to the untreated plots. Herbicide treatments containing pyroxsulam or mesosulfuron-methyl caused crop injury, but wheat plants recovered and grain yield was not affected. Mesosulfuron-methyl + iodosulfuron-methyl-sodium and mesosulfuron-methyl + iodosulfuron-methyl-sodium + diflufenican were less effective on milk thistle (Silybum marianum (L.) Gaertn). Further research involving grass and broadleaf herbicides is needed to explore ways, including the use of adjuvants, to avoid wheat injury and optimize herbicide efficacy on noxious weeds such as milk thistle.
Authors and Affiliations
Abbes Tanji, Yahya Baye, Mohamed Boutfirass
Keywords
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- EP ID EP428129
- DOI 10.18006/2017.5(5).614.622
- Views 58
- Downloads 0
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