Effect of 2,4-D and atrazine when applied with glyphosate ripener

Authors: ORGERON, ALBERT - LSU Agcenter; Petrie, Eric; GRAVOIS, KENNETH - LSU Agcenter

Submitted to: American Society of Sugar Cane Technologists
Publication Type: Abstract Only
Publication Acceptance Date: 4/1/2017
Publication Date: 6/14/2017
Citation: Orgeron, A.J., Petrie, E.C., Gravois, K.A. 2017. Effect of 2,4-D and atrazine when applied with glyphosate ripener [abstract]. Journal of the American Society of Sugar Cane Technologists. 37:38.

Interpretive Summary:

Technical Abstract: Management of late-season morningglory infestations in sugarcane is accomplished with aerial applications of the postemergence herbicides 2,4-D, dicamba, or atrazine. Likewise, the aerial application of glyphosate prior to harvest to improve stalk sucrose levels is a common practice for many Louisiana producers. The tank-mixing of glyphosate and 2,4-D has been avoided by most producers because research has shown cases of antagonism or a reduction in efficacy when glyphosate was mixed with certain herbicides. Research conducted in 2016 at the LSU AgCenter’s Sugar Research Station and USDA-ARS’s Sugarcane Research Unit showed that the tank-mixing of glyphosate (210 g ae ha-1) + 2,4-D (530 g ae ha-1) or glyphosate (210 g ae ha-1) + atrazine (3360 g ai ha-1) did not reduce ripener efficacy when compared to glyphosate (210 g ae ha-1) alone. The tank-mixing of these products also provides a means for controlling late-season morningglories infestations, which improves harvester efficiency and reduces aerial applicator costs.