Efficacy of Anthem Maxx, Solstice, Cadet, Roundup PowerMax, and Competitive Standards in Irrigated Corn

Kansas Agricultural Experiment Station Research Reports, Aug 2016

Control of Palmer amaranth and green foxtail was generally best when herbicides were applied as sequential treatments of preemergence (PRE) followed by late postemergence (LPOST) or as postemergence (POST) alone. Velvetleaf and puncturevine control was 95 and 93% or more, respectively, regardless of herbicide or application timing. Corn receiving herbicide treatments yielded 42 to 72 bu/a more grain than non-treated corn.

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Efficacy of Anthem Maxx, Solstice, Cadet, Roundup PowerMax, and Competitive Standards in Irrigated Corn

Efficac y of Anthem Max x , Solstice, Cadet, Roundup PowerMax , and Competitive Standards in Irrigated Corn R. Currie 0 Kansas State University 0 0 P. Geier 0 0 Kansas State University , USA Follow this and additional works at: http://newprairiepress.org/kaesrr Part of the Agronomy and Crop Sciences Commons, and the Weed Science Commons Recommended Citation Currie, R. and Geier, P. (2016) "Efficacy of Anthem Maxx, Solstice, Cadet, Roundup PowerMax, and Competitive Standards in Irrigated Corn," Kansas Agricultural Experiment Station Research Reports: Vol. 2: Iss. 7. https://doi.org/10.4148/2378-5977.1272 - This report is brought to you for free and open access by New Prairie Press. It has been accepted for inclusion in Kansas Agricultural Experiment Station Research Reports by an authorized administrator of New Prairie Press. Copyright January 2016 Kansas State University Agricultural Experiment Station and Cooperative Extension Service. Contents of this publication may be freely reproduced for educational purposes. All other rights reserved. Brand names appearing in this publication are for product identification purposes only. K-State Research and Extension is an equal opportunity provider and employer. Efficacy of Anthem Maxx, Solstice, Cadet, Roundup PowerMax, and Competitive Standards in Irrigated Corn Abstract Control of Palmer amaranth and green foxtail was generally best when herbicides were applied as sequential treatments of preemergence (PRE) followed by late postemergence (LPOST) or as postemergence (POST) alone. Velvetleaf and puncturevine control was 95 and 93% or more, respectively, regardless of herbicide or application timing. Corn receiving herbicide treatments yielded 42 to 72 bu/a more grain than non-treated corn. Creative Commons License This work is licensed under a Creative Commons Attribution 4.0 License. This Weed Science article is available in Kansas Agricultural Experiment Station Research Reports: http://newprairiepress.org/ kaesrr/vol2/iss7/27 Agricultural Research Results and Discussion Control of Palmer amaranth was 90% or more when any herbicides were applied PRE followed by LPOST or as POST treatments alone at 29 days after POST applications (Table 2). When most herbicides were applied EPOST alone, Palmer amaranth control was 83 to 88%. The exception was Status plus Roundup PowerMax EPOST (90%). Corvus applied PRE followed by Roundup PowerMax LPOST completely controlled puncturevine, and control was similar to most other herbicides. The exceptions were Cadet (fluthiacet) plus Diflexx (dicamba) and Roundup PowerMax or Halex GT (Smetolachlor + glyphosate + mesotrione) plus nonionic surfactant, each applied alone EPOST. Velvetleaf control was 95% or more regardless of herbicide treatment. The best green foxtail control was obtained when herbicides were applied PRE followed by LPOST or by POST alone. However, Status plus Roundup PowerMax EPOST and Halex GT and nonionic surfactant EPOST also provided good green foxtail control. Corn receiving herbicide treatments yielded 111.6 to 141.2 bu/a, and all out-yielded the untreated check (69.2 bu/a). No yield differences occurred between herbicide treatments. 29 days after postemergence application Palmer Green amaranth Puncturevine Velvetleaf foxtail --------------------------- % control --------------------------93 98 100 98 Treatmenta 29 days after postemergence application Palmer Green amaranth Puncturevine Velvetleaf foxtail --------------------------- % control --------------------------86 95 100 89 90 95 91 100 100 99 0 7.0 100 100 100 100 100 100 0 2.9 81 93 93 98 100 100 0 7.4 a AMS is ammonium sulfate, NIS is nonionic surfactant. b PRE is preemergence, EPOST is early postemergence, POST is postemergence, and LPOST is late postemergence. Kansas State University Agricultural Experiment Station and Cooperative Extension Service Yield bu/a 130.1 125.4 138.7 129.0 133.5 128.2 141.6 69.2 33.0


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R. Currie, P. Geier. Efficacy of Anthem Maxx, Solstice, Cadet, Roundup PowerMax, and Competitive Standards in Irrigated Corn, Kansas Agricultural Experiment Station Research Reports, 2016,