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Giant Ragweed Management in Soybean
March 2015



By Bill Johnson, Ph.D.
Professor of Weed Science
Purdue University
Phone: 765-494-4656
Email: wgj@purdue.edu

 

Executive Summary
(8 min 26 sec)
 

Full Presentation
(26 min 39 sec)
 

 

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Summary: Giant ragweed is one of the most problematic weeds in the soybean producing areas of the US. Yield losses can approach 100% and development of populations that are resistant to ALS (Group 2), glyphosate (Group 9), and PPO (Group 14) herbicides have created additional challenges for minimizing the yield loss capability of this weed. This presentation will discuss various control methods for minimizing yield losses and weed seed production. It will highlight the importance of proper burndown herbicide selection, postemergence application timing, and the integration of burndown, residual, and postemergence herbicides for effective seasonlong control.


Responsibility: United Soybean Board (USB) farmer-leaders develop and maintain partnerships with U.S. land grant universities and U.S. ag-focused research organizations such as the Plant Management Network to increase the transfer of checkoff-funded applied and practical production research information to U.S. soybean farmers. USB neither recommends nor discourages the implementation of any advice contained herein, and is not liable for the use or misuse of the information provided.

All presentations published on The Plant Management Network reflect individual views of the author/presenter(s) and are not an official position of The Plant Management Network or the author/presenter(s)' affiliated institutions, companies, or organizations. No endorsement of products or companies, institutions, or organizations is intended, nor is criticism implied of those not mentioned. Individuals using agricultural products or any products referenced by The Plant Management Network or its partners, sponsors, or advertisers, should ensure that the intended use complies with current regulations and laws, as well as conforms to the product label.





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