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90 percent compared with conventional tillage.
Soil Conservation Service studies show that each year soil erosion removes 2 to 3 billion tons of soil. About 5 tons per acre per year is considered to be a tolerable soil loss. Many states have average annual soil losses greater than this.
Some conservationists feel a psychological stigma is attached to the acceptance of conservation tillage, according to Walters. “Plowing and cultivating has been accepted for so long it’s hard for some farmers to overcome the urge to plow each year,” Walters said. "But no-till and other forms of conservation tillage are gaining ground yearly. Many predict acreage planted under the no-till systems will exceed conventionally planted crops in the near future.”
USDA studies estimate that in less than 35 years, 93 percent of all cropland will be planted by conservation tillage.
79.4%