In this article, unless the context otherwise requires:

1. 1. "Appliance" means any article, thing or conveyance used in growing, handling or processing of crops.
2. 2. "Crop" means any similar forage crop, tree fruit crop, vegetable crop or field and includes any appliance used in the handling thereof.
3. 3. "Director" means one or all the board of directors of a pest control district established pursuant to this article.
4. 4. "District" means a pest control district established pursuant to the provisions of this article and includes the governing body of the district and all its authorized personnel.
5. 5. "Pest" means any form of animal or plant life detrimental to agriculture.
6. 6. "Petition" means the petition to the board of supervisors made pursuant to this article for formation or dissolution of a pest control district.