2,4-D antagonizes glyphosate in glyphosate-resistant barnyard grass Echinochloa colona
2020
Li, J. ((Hunan University of Humanities, Science and Technology, Loudi (China). Collaborative Innovation Center for Field Weed Control), (University of Western Australia, Perth (Australia). School of Agriculture &Environment, Australian Herbicide Resistance Initiative (AHRI))) | Han, H. | Bai, L. | Yu, Q.
Glyphosate is often tank-mixed with auxinic herbicide 2,4-D for grass and broadleaf weed control. Here we examined the possible interaction of 2,4-D and glyphosate in barnyard grass, Echinochloa colona (L.) Link. The results showed that 2,4-D antagonizes glyphosate remarkably in glyphosateresistant populations but only marginally in susceptible populations. This antagonism is related to reduced glyphosate uptake and (to a lesser extent) translocation. As 2,4-D has multiple, unpredictable effects on other herbicides, care must be taken when tank-mixing herbicides with 2,4-D.
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