Manage Fines Before Storing Wheat and Barley

12 October 2026
AI-generated illustration of whole wheat kernels mixed with small broken-kernel fragments and fines in a grain load, with a storage bin behind it, representing fines management before bin filling.

Fines can collect in pockets that restrict airflow in stored wheat and barley. Metra’s grain preparation supports better aeration before storage. The practical starting point is to limit kernel breakage, remove fines before binning, and decide how to manage the fines that remain during filling.

Why pockets of fines matter

The storage concern is not just that fines are present—it is where they collect.

University of Minnesota Extension’s wheat and barley storage guidance, reviewed in 2018, explains that fines tend to collect in pockets inside bins. Those pockets restrict airflow, and fines are more susceptible to mold and insect attack.

That makes fines management part of preparing grain for aeration. Limiting fines before storage addresses what enters the bin; managing the remainder during filling addresses where they collect.

Reduce breakage along the handling path

The first opportunity comes at harvest. Extension recommends setting the combine for minimum grain damage and maximum cleaning. Both matter: limit kernel breakage while cleaning the harvested grain.

Handling after harvest deserves the same attention. Extension recommends operating grain augers slowly and keeping them filled with grain to reduce kernel breakage. These choices help limit fines before grain reaches storage.

Clean before binning, then plan the fill

Extension recommends cleaning wheat and barley before storage to remove fines. Make cleaning part of the handling plan before grain starts moving into the bin, rather than leaving the entire job to bin filling.

For fines that remain, Extension presents two filling approaches:

– **Use a grain spreader** to distribute fines throughout the grain mass.
– **Fill without a spreader** and periodically remove fines accumulating in the bin’s center during filling.

The distinction matters. A spreader changes where fines are distributed; it does not remove them. The second approach removes center accumulations during filling. Decide which approach fits your bin setup before filling starts.

Where Metra fits

Metra’s company knowledge identifies processing grain with its equipment, especially VDSC+ARC, as useful preparation for storage that supports better aeration. Its role belongs before storage, when you are preparing the grain that will enter the bin.

Metra helps select equipment and settings for the material being handled. Tell Metra whether you are storing wheat or barley and what is causing trouble in the grain. Discussing a sample can help identify a suitable cleaning approach.

Grain preparation and in-bin cooling are separate jobs. Preparing grain supports aeration; confirming that a cooling cycle has finished requires measuring grain temperature or the temperature of air leaving the grain.

Before the next bin fill

Review the route from harvest to storage: how will you limit kernel breakage, where will you remove fines, and how will you manage the fines that remain during filling? Make those choices before grain starts moving.

If cleaning is the unresolved step, explore Metra grain-cleaning equipment and contact Metra at 701-515-0488 to discuss your grain, a representative sample test, or an arranged warehouse demonstration. Arrange sample handling or a visit with Metra before shipping grain or traveling.