Before the cold weather, the Midwest propane storage had the biggest single week draw-down in over 20 years. It had an effect. It was the first domino in a string of several.
I don't doubt that.
What I have a problem believing is that crop drying had anything to do with it.
I work, on an everyday basis, with farmers, grain storage bin fans, dryers, etc.
The crops were not unusually moist this year, they didn't harvest any earlier than average, so they wouldn't have needed to dry any more than average.
The one week draw down, in my opinion, was people filling their propane tanks while the price was cheaper to stock up for the winter.
There you go again with the facts...