Fallow Weed Control with Postemergence Applications of AGH15004, AG14039, Roundup PowerMax, and Atrazine

Kansas Agricultural Experiment Station Research Reports, Aug 2016

All treatments except AGH15004 at 1.5 pt/a plus Roundup PowerMax (glyphosate) and nonionic surfactant provided more than 95% kochia control at 14 days after treatment (DAT). By 28 DAT, only those treatments containing atrazine provided greater than 95% kochia control. However, kochia control at 42 DAT was greater than 90% with all treatments except Roundup PowerMax plus nonionic surfactant.

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Fallow Weed Control with Postemergence Applications of AGH15004, AG14039, Roundup PowerMax, and Atrazine

Fallow Weed Control with Postemergence Applications of AGH15004, AG14039, Roundup PowerMax , and Atrazine R. Currie 0 1 P. Geier 0 1 0 Kansas State University , USA 1 Procedures An experiment conducted at the Kansas State University Southwest Research-Extension Center near Garden City, KS, evaluated the postemergence efficacy of AGH15004 and AG14039 on kochia and Russian thistle in fallow. All treatments were applied on , 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 - 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. Fallow Weed Control with Postemergence Applications of AGH15004, AG14039, Roundup PowerMax, and Atrazine 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/iss7/29 Agricultural Research Results and Discussion All treatments except AGH15004 at 1.5 pt/a plus Roundup PowerMax (glyphosate) and nonionic surfactant provided more than 95% kochia control at 14 DAT. By 28 DAT, only those treatments containing atrazine provided as much as 95% kochia control. However, kochia control at 42 DAT was greater than 90% with all treatments except Roundup PowerMax plus nonionic surfactant (80%). Only slight differences in Russian thistle control occurred at 14 and 42 DAT, but all treatments provided at least 95% Russian thistle control regardless of rating date. These new premixtures being developed by Winfield Solutions appear to have potential and benefit from the addition of atrazine for residual control.


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R. Currie, P. Geier. Fallow Weed Control with Postemergence Applications of AGH15004, AG14039, Roundup PowerMax, and Atrazine, Kansas Agricultural Experiment Station Research Reports, 2016,