NDSU Study: Topsoil Loss Could Cost Farmers

North Dakota State University researchers are quantifying the economic cost of topsoil loss, estimating that erosion and tillage can cost farmers more than $6,600 if six inches of soil are removed. The analysis shows that more than $1,100 in value is lost for every inch of topsoil due to nutrient depletion and the loss of soil organic matter. The study examined soil eroded into a roadside ditch near Highway 2 west of Grand Forks, revealing significant levels of essential crop nutrients and organic matter. While fertilizers can replace some nutrients, rebuilding organic matter could take over 150 years even under ideal management practices. Researchers emphasize that preventing erosion through reduced tillage and cover crops is far more cost-effective than attempting to replace lost topsoil.