Tart cherries are supply-controlled because they are processed into other goods, like pie filling, and can be stored for long duration (multiple seasons). The supply-control regulation is designed to prevent a surplus crop from depressing the market to the point where it's no longer viable to grow tart cherries - reducing future supply, ie. the regulation is designed to provide a consistent, stable supply.

Surplus tart cherry crops are rarely destroyed. In the event of a surplus, they are often exported, diverted to secondary markets, donated, or carried-over into next-season's stock.