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Washing soil off of corn roots to determine damage caused by corn rootworm at the University of Minnesota's Rosemount Research and Outreach Center.
Washington County, Minnesota. Used in OSHA funded, Agricultural Extension Service farm safety program on farm stress. Robert Aherin, principal investigator.
Waterlogged wheat, the result of heavy late spring rains and standing water.
Water quality research.
Water quality research.
Water quality research.
Water quality research.
Water quality research.
Water quality research.