A Giant Organic Farm Faces Criticism That It's Harming The Environment

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Wind-blown soil fills a ditch between a road and the fields of Gunsmoke Farms, a large organic farm northwest of Pierre, S.D., in early March. Stringer hide caption

Wind-blown soil fills a ditch between a road and the fields of Gunsmoke Farms, a large organic farm northwest of Pierre, S.D., in early March.

Hardly a week goes by, it seems, without a big food company making promises to deliver products from green, sustainable farms. Turning those promises into reality, though, can be complicated.

Take Gunsmoke Farms, a vast property that covers 53 square miles just northwest of Pierre, S.D. The food company General Mills, maker of Cheerios, announced in 2018 that it would convert the farm to organic production. The company planned to turn it into an educational hub to teach other farmers "how to implement organic and regenerative agriculture practices."

Now, some of Gunsmoke Farms' neighbors say that the farm is doing more environmental harm than good.

Among the critics is Dwayne Beck, a soil scientist who manages South Dakota State University's Dakota Lakes Research Station, 40 miles east of Gunsmoke Farms. Beck was skeptical about the project from the beginning. "It scared me, because normally organic [farming] entails lots of tillage, and those soils are very fragile," he said.

Farmers often till the soil — breaking it up with tools such as chisel plows or disks — to uproot weeds and get land ready for planting. But tillage also tears soil loose from the plant roots that help hold it together and also breaks down parts of the soil that are most rich in carbon and nutrients.

This is especially true of soils where Gunsmoke Farms is located, Beck said. The area developed from an ancient ocean floor, and the soil is full of clay. "Once you disturb it, nothing holds that soil together. It just turns into powder," he said, vulnerable to rain or wind that can carry it away.

This used to happen regularly in western South Dakota. Beck recalls dust storms so thick, cars crashed because drivers couldn't see vehicles just in front of them.

South Dakota was one of the places that saw severe soil erosion from wind during the Dust Bowl of the 1930s. Universal History Archive/Universal Images Group via Getty Images hide caption

Those dust storms happen less often now because over the past two decades, many farmers in the region abandoned regular tillage. They now use planting equipment that slices into undisturbed soil and places seed in the ground.

To control weeds, these farmers use herbicides. But chemical weed control isn't an option for an organic business such as Gunsmoke Farms.

During the farm's three-year transition to organic status, its managers grew primarily alfalfa, which doesn't require annual planting. In 2020, though, they planted their first crops of wheat and peas, which involved tilling the enormous fields.

Months later, Beck said his fears were realized. He collected photographs of the damage: small drifts of wind-blown soil in a roadside ditch, and a country road that disappears into a brown cloud of blowing dust. "The soil that blew out of there, it will never be the same as it was before it blew," he said. It won't have the stability and structure of healthy soil, held in place by the roots of plants.

Beck and others who live near Gunsmoke Farms said that nonorganic farmers also struggled to control soil erosion in 2020 because of drought and high winds. But the problems at Gunsmoke, they said, were worse. A planting of winter wheat, which was supposed to protect the soil on those fields, failed to grow well.

When the Gunsmoke project was just getting off the ground, in 2018, an expert from the U.S. Department of Agriculture's Natural Resources Conservation Service drew up a soil conservation plan for the farm. That plan called for wide strips of native grasses across the farm to help prevent soil from blowing, and for the steepest slopes to stay covered, most years, with crops such as alfalfa that don't require annual planting.