Isn't this one of the reasons why farm subsidies exist in the US? Paying farmers not to farm so in time of need or emergency we can produce more? (In addition

Isn't this one of the reasons why farm subsidies exist in the US? Paying farmers not to farm so in time of need or emergency we can produce more? (In addition to not over farming soil and depleting it permanently, keeping the price of food in a range to support farmers livelyhood)