Got grain in storage? Think of it like the expiration date on a milk carton, and be prepared to take action.

"Right now, more of the grain’s ‘shelf life’ has been expended than normal, due to very high dew points last fall into November," said Charles Hurburgh, a professor of agricultural and biosystems engineering at Iowa State University (ISU). "That means there’s a higher-than-normal risk of grain going out of condition."

Now’s the time to focus on grain quality, especially as temperatures start to fluctuate from mid-to-late-February into April. Here are five tips to make sure the grain you sell is in tip-top shape: