[aerotwelve]

If it's like corn in Iowa, yes, many just hold it and hope for the price to go up. It seems unreasonable, but commodity prices are just that low; selling at the wrong time can be worse for your bottom line than doing nothing. Especially since many farmers go into debt to pay for the initial costs of planting, fertilizing, ...

You tend to see a lot more corn in storage (occasionally this is just huge piles of corn covered with a tarp!) right after harvest time, precisely because that's when the prices are the lowest. There's a surprisingly big market for huge containers that are designed to store crops for long periods of time.