 For more information, visit mndnr.gov. This has been a Natural Resources Minute from the Minnesota DNR. What does life on the cutting edge mean to alfalfa grower Dan Sheps? Harv Extra has been very consistent on our test results from first crop through fourth crop. The higher quality has allowed us to feed more alfalfa haylage in our diet, and cows are able to have a higher intake with a higher quality forage.