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Unsuspected Wealth May Enrich Soil
Lincoln farmers irrigating fields may have stored up nitrogen 1 to 6 feet deep, says Clinton Hoover. Nebraska tests show subsoil nitrate levels up to 150 pounds per acre in some irrigated corn fields. Less fertilizer can still reach maximum yields, but testing subsoil before cutting back saves costs.
MENTIONED IN THIS ARTICLE
Lincoln
Clinton Hoover
University of Nebraska Extension Agronomist
Nebraska Experiment Station
Hoover