CA Food & Agric Code Section 52981

(a)

Notwithstanding any other provision of this chapter, nonapproved varieties of cotton may be grown in the district, subject to regulations proposed by the board and adopted by the department.

(b)

The department shall adopt regulations that ensure that the growing of nonapproved varieties of cotton do not adversely affect the quality of Acala and Pima cotton approved to be grown in the district.