The U.S. Department of Agriculture’s recently released 2017 Census of Agriculture data show the amount of land in the largest federal conservation programs has decreased nationwide and in many Midwest and Plains states. But that doesn’t mean farmers are ignoring soil health, nutrient runoff or erosion problems. The census asks about federal conservation and wetlands programs, which Michigan State University researcher Adam Reimer said typically refers to land retirements — taking marginal lands out of production in exchange for money. The largest one, the Conservation Reserve Program, doesn’t allow as many acres now as it did before the 2014 farm bill.