[26] To become a Certified Crop Adviser an applicant must pass two exams that may both be written on the same day at the same location.The International exam is written by CCAs in North America.The Prairie region exam is written by individuals wishing to work as advisers in the three Prairie provinces of Canada or in the heartland states of the US.See also [edit] Agriculture Agronomy Agricultural science Agricultural engineering Horticulture Animal science Botany Forestry Aquaculture