See: the covid-19 food market crash where farmers poured bleach on meat and vegetables, burned grains, and poured milk into sewers because they didn't want to sell at a low price, and hoped that by artificially limiting supply, the price will go back up.
This is the same strategy that DeBeers diamonds or oil cartels use. But because food is perishable and can't be hoarded like oil and diamonds, they "had" to destroy it.