Ariz. Rev. Stat. § 42-6017
C. A city or town may:
3. Notwithstanding section 42-5061, subsection A, paragraph 33, paragraph 42, subdivision (b) and paragraph 43 and subsection B, paragraph 5, continue to levy an existing transaction privilege tax that was levied on or before May 1, 2019 on the gross proceeds of sales or gross income derived from the sales of:
(a) Propagative materials to persons who use those items to commercially produce agricultural, horticultural, viticultural or floricultural crops in this state. This subdivision does not apply and a city or town may not continue to levy a transaction privilege tax pursuant to this subdivision as follows:
(c) Implants used as growth promotants and injectable medicines, not already exempt under section 42-5061, subsection A, paragraph 8, for livestock or poultry owned by or in possession of persons who are engaged in producing livestock, poultry, or livestock or poultry products or who are engaged in feeding livestock or poultry commercially. This subdivision does not apply and a city or town may not continue to levy a transaction privilege tax pursuant to this subdivision as follows:
(d) Neat animals, horses, asses, sheep, ratites, swine or goats used or to be used as breeding or production stock, including sales of breedings or ownership shares in such animals used for breeding or production. This subdivision does not apply and a city or town may not continue to levy a transaction privilege tax pursuant to this subdivision as follows:
6. Notwithstanding section 42-5061, subsection A, paragraph 28 or section 42-5122, levy a transaction privilege tax on the gross proceeds of sales or gross income derived from the sale of a motor vehicle to:
D. For the purposes of this section:
4. "Propagative materials":