Poly- D -glucosamine (chitosan); exemption from the requirement of a tolerance.

(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]