cash crop
cultivo comercial
a crop grown mainly to sell for profit rather than to feed the farmer's family.
Example
Tobacco was colonial Virginia's main cash crop and was shipped to England by the ton.
In Spanish
cultivo comercial — un cultivo que se siembra sobre todo para venderlo y ganar dinero, no para alimentar a la familia del agricultor.
El tabaco era el principal cultivo comercial de la Virginia colonial y se enviaba a Inglaterra por toneladas.