What is it called when farmers are only able to produce enough food for themselves with nothing left to trade or sell?

When farmers are only able to produce enough food for themselves with nothing left to trade or sell, it is referred to as subsistence farming. This type of agriculture focuses on growing enough food to meet the needs of the farmer's family, rather than producing surplus for sale or trade. Subsistence farming often limits economic growth and can make farmers vulnerable to food insecurity if crops fail.