40 CFR § 180.1157
Cytokinins; exemption from the requirement of a tolerance
June 9, 2020
An exemption from the requirement of a tolerance is established for residues of cytokinins (specifically: aqueous extract of seaweed meal and kinetin) in or on all food commodities when used as plant regulators on plants, seeds, or cuttings and on all food commodities after harvest in accordance with good agricultural practices.
[64 FR 31505, June 11, 1999]