40 CFR § 180.1297
Homobrassinolide; exemption from the requirement of a tolerance
June 9, 2020
An exemption from the requirement of a tolerance is established for the residues of homobrassinolide in or on all food commodities when applied/used as a plant growth regulator in accordance with good agricultural practices.
[75 FR 39459, July 9, 2010]