Yield, Nitrogen, Phosphorus, Copper and Zinc Uptake by Barley Forage Amended with Anaerobically Digested Cattle Feedlot Manure (ADM)X. Hao, B. Hill, P. Caffyn, G. Travis, V. Nelson and X. LiE3S Web of Conferences, 1 (2013) 04002DOI: https://doi.org/10.1051/e3sconf/20130104002