Weed Identification and Herbicide Injury Diagnosis
Samples may be submitted to ISU Agronomy Extension for identification or evaluation for potential herbicide injury. This service is not provided for determining identification of "curiosity" samples (native plants, horticulture specimens, etc.)
Evaluation for herbicide injury is done on a visual basis only. No lab procedures are conducted for herbicide residues.
Please follow the collection and submission procedures below and use the Weed ID & Herbicide Injury Diagnosis form, AG-146. Copies of the form can be obtained from your local county extension office, ISU Publications Distribution, or by downloading from this site.
Online Weed ID resources
Weed Identification Resources
Hints for Specific Plant Materials
more information contact:
ISU Extension Agronomy
2104 Agronomy Hall
Ames, Iowa 50011-1010
Voice: (515) 294-1923
Fax: (515) 294-9985
site designed and managed by Brent Pringnitz.
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