14 CFR § 137.35
Limitations on private agricultural aircraft operator
July 13, 2020
No person may conduct an agricultural aircraft operation under the authority of a private agricultural aircraft operator certificate—
(a) For compensation or hire;
(b) Over a congested area; or
(c) Over any property unless he is the owner or lessee of the property, or has ownership or other property interest in the crop located on that property.