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Weeds and Weed Control
Palmer amaranth identification
Palmer amaranth has been identified both in crop fields and in conservation plantings using native seed mixes. Early detection is essential in order to prevent the new weed from getting permanently established in fields where it has been introduced.
This publication will help people new to Palmer amaranth differentiate it from waterhemp and the other weedy pigweeds found in Iowa.
In the accompanying 10-minute video below, Bob Hartzler, Iowa State University Extension Weed Scientist, discusses what Palmer amaranth is, where it came from and provides ways to detect early and what steps to take to eradicate the weed.
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National Pest Alert - Palmer Amaranth (Unit=50)
Herbicide options for Palmer amaranth in CRP
Weed Identification Field Guide 2nd Edition
Herbicide use may restrict grazing options for cover crops
2022 Herbicide Guide for Iowa Corn and Soybean Production
Midwest Cover Crops Field Guide 3rd Edition
Herbicide Resistance and Weed Management Course
Weed Science Program 2018 Weed Control Results
Weed Science Program 2017 Weed Control Results
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