Going 'Gung-Hoe.’ Tom Cotter built this 16-row, 40-foot-wide machine out of an old Gandy Orbit-Air seeder and two 8-row rotary hoes to interseed cover crops into standing corn at the V4-V6 stage. “The whole thing cost me less than $4,000,” says Cotter. “It’s cheap, easy and versatile.”

Getting Out of the Rut with No-Tilling, Cover Crop Interseeding, Weed Suppression

Tom Cotter is boosting the value of his soils in the heart of the Corn Belt by putting the iron away and keeping his fields covered and active year round.

It’s easy to get stuck in a rut with farming, but that’s a major reason Tom Cotter did the opposite of that and turned to no-tilling and interseeding cover crops to rejuvenate his farm.

The system he’s developed over time let him increase yields, generate more income from the same amount of land and improve the quality and health of his soils, livestock and crops in a geography that generates some challenges to no-till success.

Learning Curve

Cotter is a fourth-generation farmer whose family had been tilling their 1,100-acre farm near Austin, Minn., since the 1870s. About 19 years ago, Cotter and his father Michael first tried a cover crop of dwarf Essex rape seed on harvested pea ground for weed suppression and drainage. They saw immediate results on their heavy, clay loam soils.

“We used it for the weed suppression first but realized really fast that there was an advantage to tiling also,” Cotter told attendees at the National No-Tillage Conference earlier this year. “When we’d tile the field we’d have to hook three tractors up to get through mud and wet spots. 

“With the cover crop out there it’s like driving on a football field. Then we realized that our farm drainage as a whole was working better because of the cover crops. I still install drain tile in some key spots, but the cover crops are helping that water infiltrate faster.” 

The following year, the field where the cover crop had been also gave them their best…

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