40 CFR § 180.1072
Poly-D-glucosamine (chitosan); exemption from the requirement of a tolerance
June 9, 2020
(a) An exemption from the requirement of a tolerance is established for residues of the biological plant growth regulator poly-D-glucosamine when used as a seed treatment in or on barley, beans, oats, peas, rice, and wheat.
(b) An exemption from the requirement of a tolerance is established for residues of the biological plant growth regulator poly-D-glucosamine when used as a pesticide in the production any raw agricultural commodity.
[60 FR 19524, Apr. 19, 1995]
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