Useful Links Purdue University Chat n' Chew Cafe Plant and Pest Diagnostic Lab Purdue Cooperative Extension Service Crop Diagnostic Training and Research Center Purdue Pesticide Programs Turf Management and Science Forage Information Pest & Crop Newsletter Weed Science Societies Weed Science Society of America (WSSA) North Central Weed Science Society (NCWSS) Southern Weed Science Society (SWSS) Northeastern Weed Science Society (NEWSS) Western Weed Science Society (WSWS) Canadian Weed Science Society (CWSS) Aquatic Plant Management Society (APMS) International Weed Science Society (IWSS) Weed Control Guides 2021 Weed Control Guide for Ohio, Indiana, and Illinois 2021 North Dakota Weed Control Guide 2020 Michigan State Weed Control Guide 2021 Herbicide Guide for Iowa Corn and Soybean Production 2021 Mid-Atlantic Weed Control Guide - Penn State University Weed Science Sites Iowa State University Michigan State University North Dakota State University Pennsylvania State University Southern Illinois University The Ohio State University University of Illinois University of Minnesota University of Missouri University of Nebraska University of Wisconsin Other Useful Links CDMS Pesticide Label Database Greenbook Plant Protection Label Database Online Conversions
