Harvest is now underway for Canadian grain producers, and the Canadian Grain Commission is reminding producers that insects could be present in any grain stored over the summer, or in areas around storage bins.

These insects could pose a problem by moving easily between bins and infest your new harvest.

To protect the quality of grain currently in storage, the commission recommends sampling the grain from the core at a depth of 30 to 50 cm or 12 to 18 inches from the surface.

Insects are likely to be found in pockets of warm or moist grain. Typically, stored product insects are very small beetles that may not be moving.

For best results, grain temperature should be less than 15°c.

As well, you should keep your grain at the appropriate moisture content, depending on its type.

Make sure storage areas are clean and free from grain residues that can harbour or attract insects.

The Canadian Grain Commission's website has advice on controlling grain feeding insects. You can also contact our Infestation Control and Sanitation Officer for further assistance.

The also recommend, if required, treat empty storage bins with a registered contact insecticide such as malathion, pyrethrin or a diatomaceous earth-based product. Make sure to treat floor-wall joints, aeration plenums or floors and access points thoroughly. Note: Do not use malathion in bins intended for canola storage. .

Other associated links suggested:
Controlling insect pest infestations http://www.grainscanada.gc.ca/storage-entrepose/control-controle-eng.htm
Insect identification keys http://www.grainscanada.gc.ca/storage-entrepose/keys-cles/iik-cii-eng.htm