Tannin is approved for use as a dispersing agent in pesticide formulations applied to growing crops only under 40 CPR 180.920. Tannins also occur naturally in coffee and tea and nearly all wood and vegetation contain some form of tannin in the leaves, twigs, bark, wood, or fruit, including a variety of plants utilized for food and feed (food grains, fruits, wines, teas, and forages).
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