The 'Group' letters/numbers that you see throughout this web site refer to the classification of herbicides by their site of action. To see a full list of herbicides and HRAC herbicide classifications click here.
QUIK STATS (last updated Feb 24, 2015 )
NOTES ABOUT THIS BIOTYPE
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http://www.weedscience.org/Documents/ShowDocuments.aspx?DocumentID=1355
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