The only fumigant that is widely accepted for grain export is phosphine.
We have limited tools in the grain industry, so we need to do our best to preserve them.
If grain is fumigated during transit, and it comes to you, the best advice would be to sample.
We talked about being the gatekeeper and monitoring with SLAM.
A little bit of training goes a long way with your staff to help identify what is a stored grain product pest.
Are they alive, or are they dead?
Dead insects don’t breed resistance, but we have to ensure the concentration was high enough to kill any insects that come through.
If you do find live insects, you can test for resistance and fumigate it at a higher level to knock out those genetics.
You don’t incur any tolerance or resistance in an effort to maintain the integrity of phosphine fumigants.
Reprinted from Grain Journal July/August 2020 Issue