Improving the Fertilizer Value of Swine Manure: In-Depth Study of Nitrogen Transformations in Soils, Corn Nitrogen Uptake, and Swine Diet Manipulation to Optimize Manure as a Resource for Agriculture

98 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2006.Soil extractable P levels (0--30 cm) after corn harvest were increased by 1.5 mg kg-1 Bray P1. Nitrate-N present in manured soils (0--90 cm) after harvest did not differ from soils receiving the same inorganic N rates, and averaged 17, 24 and 30 kg NO3--N for the low, medium, and high CP manures, respectively.Ope