However, the selling of soybean growers is not exactly the same as your short selling. By short selling, you mean that futures speculators predict that the price of soybeans will fall, sell the soybeans they don't have first, and then buy them back when the soybeans really fall in the future. But if the price of soybean rises instead of falling, speculators will lose money.

Soybean growers are selling the soybeans they will harvest. If the price of soybeans really falls in the future, the soybean grower can still sell his soybeans at the current higher price, and he can make money. If the price of soybean rises in the future, the soybean grower will still sell his soybean at the current price, so he will earn less money. In any case, soybean growers will not lose money, but it is just a matter of earning more and earning less.