Iowa State University
University of Illinois
Michigan State University
University of Missouri
Kansas State University
the Ohio State University
Penn State University
Purdue University
Southern Illinois University
University of Wisconsin
University of Minnesota
South Dakota State University
North Dakota State University
Montana State University
University of Guelph (Ontario)
Oregon State University
University of Kentucky
University of Georgia
Louisiana State University

Weed Science Society of America
North Central Weed Science Society
Western Society of Weed Science
Northeastern Weed Science Society
Southern Weed Science Society
Canadian Weed Science Society
International Weed Science Society
Aquatic Plant Management Society

CDMS
Greenbook
AgriSolutions Labels/MSDS
Cheminova
AMVAC Labels/MSDS
Dow AgriSciences Labels/MSDS
DuPont Labeles/MSDS
FMC Labels/MSDS
Monsanto Labels/MSDS
Syngenta Labels/MSDS
Valent Labels/MSDS

AgriSolutions (Winfield)
Albaugh
AMVAC
BASF
Bayer Crop Science
Cheminova
Dow AgroSciences
DuPont Crop Protection
FMC
Makhteshim
Monsanto
NuFarm
Rosen's
Syngenta
Valent

TeeJet Catalog
TeeJet
Delavan
Greenleaf Technologies
Lechler Inc.

USDA PLANTS Database
ontarioweeds.com
WSSA Weed Photo Gallery
Weedipedia
Weeds of the North Central States
Missouri Weed ID Guide
missouriplants.com
New Jersey Weed Gallery
Iowa State University Resources
Virginia Tech Weed ID
Common Weed Seedlings of the North Central States
U of Illinios Weed ID
U of California Weed Photo Gallery
Ohio Perennial & Biennial Weed Guide
Montana Plant Life

WeedSOFT
WeedCast
Weedometer
WeedTool (glyphosate resistance evaluation tool)
WeedPro75
WebHADSS

Kansas State (pdf)
MoA Key (pdf)
North Central Region Pub. 377
Corn/Soybean Herbicide Families (Purdue)
GWC-3: MoA Chart (pdf)

Herbicide Resistant Weed Survey
Glyphosate / Weeds / Crops Series
WeedTool (glyphosate resistance assessment tool)