Okla. Stat. tit. 50, § 1.1
A. As defined in this act:
B. Agricultural activities conducted on farm or ranch land, if consistent with good agricultural practices and established prior to nearby nonagricultural activities, are presumed to be reasonable and do not constitute a nuisance unless the activity has a substantial adverse affect on the public health and safety.
If that agricultural activity is undertaken in conformity with federal, state and local laws and regulations, it is presumed to be good agricultural practice and not adversely affecting the public health and safety.
Laws 1980, HB 1707, c. 189, § 2, eff. October 1, 1980.