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Incorporate a solid — urea: Urea is a dry nitrogen fertilizer that is spread across ... on the soil or incorporated into the soil. Spray a liquid — urea-ammonium nitrate (UAN): UAN mixtures ...
Department of Horticultural Sciences, North Carolina State University, 2721 Founders Drive, Kilgore Hall, Raleigh, North Carolina 27607-7609, United States ...