I knew a farmer that grew wheatHe grew wheat consistantly for many years and found that he could get a better price if he dried it and stored it . So he invested in drying equipment and storage so he could store a years harvest and sell it later in the year. Then weat prices rose and alot of people grew wheat. Then wheat prices went down cause there was an over supply. So he built more storage so he could store two years worth. He was in no hurry to sell cause he was well off. But wheat prices stayed down and he was looking at his harvest and said.There are two things wrong with wheat.Number one is you can only store it for so long a couple of years maybe three.And Number two is that you can,t leave it in the field.