Iranian Society of Weed Science Iranian Journal of Weed Science 1735-3548 19 2 2023 12 22 Comparison of the efficiency of polyethylene mulch and herbicides in controlling Bermuda grass (Cynodon dactylon L.) in vineyards Comparison of the efficiency of polyethylene mulch and herbicides in controlling Bermuda grass (Cynodon dactylon L.) in vineyards 159 169 132498 10.22034/ijws.2024.365960.1459 FA Mansor Sarani Department of Plant Protection, Agricultural and Natural Resources Research Center of Sistan, Agriculture Research, Education and Extension Organization, Zabol, Iran. Mostafa Oveisi Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Tehran, Karaj, Iran. Batoul Samedani Iranian Research Institute of Plant Protection, Agricultural Research, Education and Extension Organization, Tehran, Iran. Journal Article 2024 06 01 Grapevine production encounters significant challenges due to competition from Cynodon dactylon. We conducted a three-year study in a Red Yaghuti vineyard using a randomized complete block design. Our experiment included treatments with Clethodim, Sethoxydim, Fluazifop-p-butyl, and Haloxyfop R-methyl ester, as well as the application of polyethylene mulch (PM) for one, two, or three consecutive years. A control group with no weed control measures was also included, resulting in a total of eight experimental treatments. Even the least effective herbicide, Sethoxydim, reduced the dry weight of both above-ground and underground parts of C. dactylon by at least 60%, underscoring the efficacy of the herbicides for controlling C. dactylon. However, among the herbicides tested, Clethodim was the most effective in reducing the dry weight of both above-ground and underground parts of C. dactylon. Keeping C. dactylon plants under PM for two consecutive seasons virtually eliminated measurable dry weight in both above-ground and underground parts. The treatment of three consecutive years of soil under PM produced similar results to two consecutive years, resulting in zero dry weight for both above-ground and underground parts of C. dactylon. In comparison, the control and one-year PM treatments consistently yielded less than the herbicide treatments. The highest yield was achieved with consecutive years of PM use, producing approximately 13,000 kilograms per hectare. The economic and environmental costs of Clethodim use versus PM in vineyards differ significantly. While herbicides like Clethodim involve recurring costs and potential. Grapevine production encounters significant challenges due to competition from Cynodon dactylon. We conducted a three-year study in a Red Yaghuti vineyard using a randomized complete block design. Our experiment included treatments with Clethodim, Sethoxydim, Fluazifop-p-butyl, and Haloxyfop R-methyl ester, as well as the application of polyethylene mulch (PM) for one, two, or three consecutive years. A control group with no weed control measures was also included, resulting in a total of eight experimental treatments. Even the least effective herbicide, Sethoxydim, reduced the dry weight of both above-ground and underground parts of C. dactylon by at least 60%, underscoring the efficacy of the herbicides for controlling C. dactylon. However, among the herbicides tested, Clethodim was the most effective in reducing the dry weight of both above-ground and underground parts of C. dactylon. Keeping C. dactylon plants under PM for two consecutive seasons virtually eliminated measurable dry weight in both above-ground and underground parts. The treatment of three consecutive years of soil under PM produced similar results to two consecutive years, resulting in zero dry weight for both above-ground and underground parts of C. dactylon. In comparison, the control and one-year PM treatments consistently yielded less than the herbicide treatments. The highest yield was achieved with consecutive years of PM use, producing approximately 13,000 kilograms per hectare. The economic and environmental costs of Clethodim use versus PM in vineyards differ significantly. While herbicides like Clethodim involve recurring costs and potential. https://ijws.areeo.ac.ir/article_132498_416bb712a0d4ef35f4fd25d6638591bc.pdf