Why become a Certified Crop Adviser (CCA)? Being certified adds credibility and shows you are serious about the agronomic profession. When you become certified, you join more than 13,000 of your peers in North America's largest, most recognized agriculturally-oriented certification program. This program's professional standards are recognized by industry, academia, and government and referenced in statutes. Through certification, you tell your clients, employer, and the public you have gone above and beyond to ensure their success.