Monitoring Stored Grain Temperatures

With spring temperatures on the rise, it is important to keep a close eye on stored grain, as warmer weather can lead to increased moisture migration and spoilage risks.

Producers are reminded to regularly monitor grain temperature and to keep stored grain cool and dry by regular aeration or by turning it.

How Temperature and Moisture Work 

Grain is a very good insulator and, when undisturbed, holds temperature well. If warm grain is placed into storage and left undisturbed, convection currents develop and cause hot spots and moisture condensation. To avoid this, regularly monitor the temperature and determine the moisture content of the grain.

Determining the Moisture Content of Grain 

To determine the moisture content of grain in storage, take samples from bins every three to four weeks after storage if grain is not managed (no aeration or turning). Samples should be taken from several areas of the bulk and be kept in sealed plastic containers prior to testing.

Monitoring Temperature

Check the temperature of the bin every two weeks. Temperature should be measured by using temperature sensing cables that are permanently installed or by probing the grain with an electronic sensor device. 

If you are interested in learning more about monitoring grain temperature and aeration, visit the Canadian Grain Commission's website.