A.R.S. § 3-205.01

The director may treat, spray, control, suppress or eradicate noxious weeds, crop pests or diseases through a countywide, area-wide or statewide program or programs that have been approved or authorized by the department. If such countywide, area-wide or statewide program or programs affect cotton, the program or programs must also be approved by the cotton research and protection council. The director may take whatever actions that are necessary to assist, support or enforce such programs including entering any fields to treat, spray, control, suppress or eradicate noxious weeds, crop pests or diseases under these authorized or approved programs.