In creating this series, we found many excellent resources already available. Here are some of our favorites, including resources for specific crops.
Do you have a relevant resource or tool to add? Please let us know.
Free online tool for generating aerial satellite maps.
State Pesticide Regulatory Agencies
Association of American Pesticide Control Officials
Links for all state regulatory agencies. Check updated regulations for your state and complaints procedure.
Leaf Index and Severity Rating
Created for grape growers to document the progression of damage but may be useful for other growers as well. Tips on damage terms, what to look for, and how and what to document over time.
Provides a directory of state sensitive crop registries and sells field signs.
U.S. Tolerances and Exemptions for Pesticide Chemical Residues in Food
Code of Federal Regulation, Title 40, Part 180
IPM Herbicide Symptoms database
University of California Division of Agriculture and Natural Resources
A searchable gallery of herbicide damage photos for a wide variety of crops and products, plus information on herbicide trade names, active ingredients, and modes of action.
Herbicide Injury Website
North Carolina State Extension
An excellent series of fact sheets and photos on the symptoms of common herbicides on several fruit and vegetable crops. Also includes a handy Injury Site Visit check list.
Herbicide Site of Action Key
University of Wisconsin
Compact but useful 2-page key to identifying herbicide plant injury noticed at emergence or later in the growing season.
Plant Injury from Herbicide Residue
Virginia Cooperative Extension Service Publication PPWS-77P
Discusses effects and persistence of several growth regulator herbicides, including dicamba and 2,4-D.
University of Missouri Herbicide Damage Trials
Excellent photos of drift damage at various levels of severity
* Investigations of Sensitivity of Ornamental, Fruit, and Nut Plant Species to 2,4-D and Dicamba
* Evaluations of Dicamba and 2,4-D Injury on Common Vegetable and Flower Species
Diagnosing Herbicide Injury on Garden and Landscape Plants
Smart diagnostic tips written for homeowners.
Dicamba and 2,4-D Visual Sensitivity Scale for 2017
The University of Georgia
Comparative sensitivities among common horticultural crops.
Air Temperature Inversions Causes, Characteristics and Potential Effects on Pesticide Spray Drift
North Dakota State Online Publication AE1705 (Revised Oct. 2019)
The Deal with Dicamba
National Agricultural Law Center
Detailed information on dicamba legal developments.
Why are temperature inversions important when deciding on whether we should spray?
Dave Nicolai, University of Minnesota Extension Crops
Short video explaining temperature inversions and why they are a big deal.
Five Things We’ve Learned about Dicamba
University of Missouri
Recent findings on temperature inversions, pH effects on volatilization, and plant drift injury.
Herbicide Mode of Action and Sugar Beet Injury
North Dakota State University