The Commissioner of Agriculture shall have power to revoke any license granted under the provisions of this Article, upon good and sufficient evidence that the provisions of this Article or the rules and regulations of the Commissioner of Agriculture are not being complied with: Provided, that before any license shall be revoked, an  opportunity shall be granted the licensee, upon being confronted with  the evidence, to show cause why such license should not be revoked. (1951, c. 1121, s. 1.)