I have never tried air to remove fus, however the Ont Ag says you can take some out by turning up air on combine so I don't see why high air machine wouldn't take some out. Also have herd of some good results with gravity table. Not sure what you would do with clean out as it could be toxic if fed to livestock.
My next ? would be if it can be removed for grade improvement after normal cleaning procedures, shouldn't it be included in "cleaning for grade improvement" in the Grain Grading Guide? Thereby becoming dockage.
Maybe time to catch up to today's problems and equipment to address these problems. On the production side we continuously make advancements at our expense time for industry to catch up.
Cleaning for grade improvement - Wheat
Cleaning for grade improvement for wheat
Material to be removed Equipment Composition of dockage
Broken kernels No. 6 buckwheat hand sieve
No. 10x10 wire hand sieve
If the weight of brokenkernels in the cleaned sample is over the grade tolerance, you can remove up to 5.0% of the gross weight in broken kernels to improve the grade.
For example, if a sample of CWRS contains 12% broken kernels by gross weight, you can remove enough broken kernels to bring the percentage to 7%, which brings the sample within the grade tolerance for No. 3 CWRS. Add the maximum 5% broken kernels to dockage.
See Shrunken and broken.
Bunt balls Carter dockage tester, using the setup for Normal cleaning procedures, but with air control at a maximum setting of 7
If there is no odour, remove bunt balls and add to dockage.
If there is an odour, bunt is a grading factor.
See Common bunt.
All foreign material (other than stones and wild oats) No. 6 buckwheat hand sieve
No. 10x10 wire hand sieve Add material to dockage, if the grade is improved as a result.
Stones No. 6 buckwheat hand sieve If the weight of stones and other material removed is
5.0% or less of the gross weight, assess as dockage.
More than 5.0% of the gross weight, see Stones in Grading factors, or the relevant grade determinants table.
Wild oats Carter dockage tester, using the setup for Normal cleaning procedures, but with No. 1 riddle
No. 10x10 wire hand sieve Everything removed is dockage.
FUS DMG is not one of the factors that is considered in the cleaning for grade improvement process, due to the fact that not all FUS is the same. Yes, some of it is very dead, thin and light, but with most farmers now applying fungicides, the kernels are often fully developed and weigh just as much as a healthy kernel. Therefore, the guys that don't spray would get the benefits from cleaning more than the guy that tried the best to lessen the chance of getting the FUS, but missed the application window by a day and still ended up with the FUS in the field.
There is a study going on right now about removing the FUS from wheat being done by several Ag partners in Canada, and the results have been very positive, however the drawback is the speed of the machines, maxing out at just a few tonnes up to 10 tonnes an hour. For an on farm process, this may work, but to put it into terminal use would be a drop in an ocean.