Palmer amaranth
The #1 weed problem in the country is not in North Dakota, YET. We need to keep it that way. Palmer amaranth is a type of pigweed that has devastated crops in the South and Midwest. It has now been identified in SD, IA, and MN. We need to establish a zero tolerance for this weed. Palmer amaranth has these characteristics:
- Grows aggressively: Can grow 2 to 3 inches per day in optimum conditions
- Can grow to 6-8 feet tall
- Has reduced yield up to 91 percent in corn and 79 percent in soybean
- Prolific seed producer: Up to 1 million seeds per plant
- Emerges throughout the growing season
- Very prone to herbicide resistance (multiple modes of action)
Palmer amaranth identification
Palmer amaranth identification. Dr. Christy Sprague, Michigan State University
Eight Key Points to Palmer Amaranth and Waterhemp Identification. Penn State University
http://extension.psu.edu/pests/weeds/palmer-amaranth/eight-key-points-to-palmer-amaranth-and-waterhemp-identification
Palmer amaranth vs. Waterhemp, Ohio State University
https://www.youtube.com/watch?v=6UjFfOfWeXc
Palmer amaranth ID, Purdue University
https://www.youtube.com/watch?v=wNgRvvnPQJ8
Palmer amaranth in the news
Palmer amaranth in Iowa, Iowa State University (August 19, 2016 – Updated Sept 6)
http://crops.extension.iastate.edu/cropnews/2016/08/palmer-amaranth-iowa-what-we-know
Minnesota Crop News, University of MN (August 23, 2016)
http://blog-crop-news.extension.umn.edu/2016/08/palmer-amaranth-new-weed-threat-to.html
MN press release announcing Palmer amaranth has beenentified in MN (September 22, 2016)
http://news.extension.umn.edu/2016/09/palmer-amaranth-detected-in-minnesota_22.html
Minnesota Crop News, University of MN (September 23, 2016)
http://blog-crop-news.extension.umn.edu/2016/09/palmer-amaranth-in-mn-reporting.html
Palmer amaranth information
Palmer amaranth biology, identification, and management. Purdue University
https://www.extension.purdue.edu/extmedia/WS/WS-51-W.pdf