Iowa Corn News
From checkoff efforts to legislative happenings to association news, stay up to date and in the know on all things Iowa Corn.
This month’s Stewardship Advocate is partially adapted from an article from the Illinois Corn Growers Association entitled “A Farmer’s Guide to the GREET model”. Recently, there has been a lot of information and confusion about the GREET model, especially as it relates to tax credits like 45Z and 40B.
This month’s Stewardship Advocate features denitrifying bioreactors, a relatively new edge-of-field water treatment technology used to reduce nitrate-nitrogen in tile water coming from crop fields. Bioreactors are below-ground chambers, where tile water mixes with a high-carbon material like woodchips in a low-oxygen environment. Naturally occurring microorganisms on the wood chips consume the nitrates in the water and release it as nitrogen gas. The average bioreactor can handle up to 100 acres of upstream tile drained land. Installed bioreactors have shown up to a 54% nitrate load reduction, with an average nitrate removal of 43%.
Check out the latest issue of Warm Welcomes from the Farm to find corn-inspired recipes and enter to win our giveaway.