The Ohio State University:
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Ohio Agricultural Research and Development Center
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Department of Horticulture and Crop Science
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Ohio State University Extension's Agronomic Crops Network
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Organic Farming Research Network
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Soil Balancing
Weed Science Society:
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Weed Science Society of America (WSSA)
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North Central Weed Science Society (NCWSS)
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Southern Weed Science Society (SWSS)
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Northeastern Weed Science Society (NEWSS)
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Western Weed Science Society (WSWS)
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Canadian Weed Science Society (CWSS)
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Aquatic Plant Management Society (APMS)
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International Weed Science Society (IWSS)
Herbicide Label Database: