Posted by bigjt on October 12, 2008 at 01:16:25 from (206.72.54.246):
In Reply to: Corn Drying Question posted by super99 on October 11, 2008 at 05:02:57:
OK you are bringing back my college days. I took a course at ISU covering grain handling not saying that makes me a expert by any means, but the guy that taught the course is quoted often in farm magazines and on the radio.
The drying zone when using natural air is approximatly 2 feet thick. If I remember right corn will dry to approximatly 14% to 15% and stay there. If you are using natural air LEAVE THE STIRRING MACHINE OFF. 2t2@ia and I have this discussion every year.
As corn gets wetter the storage life exponentially decreases. It really starts to drop off above 20% if I remember right.
I would wait till you are pulling in corn consistantly below 20%. I wouldn't worry too much about layering or binning in batches. Get at least 2 feet in the bin, turn on the fans and then fill as you can. If you want to save the electricity just turn off the fans when the humidity is high like above 70 to 80% RH. Running the fans above that level without heat won't do any damage but won't do any good either. From the air corn doesn't pick up any appreciable moisture but you won't do any drying either.
If you have left the stirring machine off during the whole process it is real easy to know when the bin is done if most of the corn went in at the same moisture. Just pull some samples from the top and when it is to a satisfactory level the whole bin is done.
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