Manure management: Developing a statewide extension and applied research program in manure management. On-going efforts include: 1) nutrient management training programs for University Extension and Natural Resource Conservation Service personnel in collaboration with Agricultural Engineers; 2) collaboration with the swine and dairy focus teams on agronomic and environmental issues affecting producers managing manure; 3) developing decision support tools that use geographic information systems to address nutrient management issues at the farm and county level; and 4) developing recommendations and educational programs to promote manure management strategies that optimize manure nutrient use by crops while minimizing the movement of manure nutrients into water resources.
Diagnostic tools for predicting nitrogen need in corn: On-farm correlation and calibration studies to assess the capability of diagnostic tools to predict early-season nitrogen need in corn. Diagnostic tests include soil tests, chlorophyll meter and other hand-held radiometers, and aerial photographs. This is a collaborative statewide project with Peter Scharf, Agronomy Extension, at over 25 sites in 1997 with more than half the fields receiving manure.
Pasture soil fertility: Teach the soil fertility portion of the Grazing Schools at the Forage Systems Research Center, Linneus, Missouri. Pursuing research opportunities for evaluating the minimum soil test phosphorous levels to support legumes in rotationally-grazed pastures.
J.A. Lory, M.P. Russelle, and G.H. Heichel. 1992. Quantification of symbiotically fixed nitrogen in soil surrounding alfalfa roots and nodules. Agron. J. 84:1033-1040.
J.A. Lory and M.P. Russelle. 1994. Evaluation of a diffusion method for preparing low-nitrogen samples for nitrogen-15 analysis. Soil Sci. Soc. Am. J. 58:1400-1404.
J.A. Lory, M.P. Russelle, and T.A. Peterson. 1995. A comparison of two nitrogen methods: traditional vs. difference. Agron. J. 87:648-651.
J.A. Lory, M.P. Russelle, and G.W. Randall. 1995. A classification system for factors affecting crop response to fertilizer N. Agron. J. 87:869-876.
J.A. Lory, G.W. Randall, and M.P. Russelle. 1995. Crop sequence effects on response of corn and soil inorganic N to fertilizer and manure nitrogen. Agron. J. 87:876-883.
Selected Proceedings and Abstracts, 1992-1997
J.A. Lory, J.F. Power, B. Eghball, and J.W. Doran. 1996. Indicators of gaseous nitrogen loss from beef cattle feedlots. p. 474. In Conference proceedings of the International Conference on Air Pollution from Agricultural Operations. February 6-7, 1996, Kansas City, MO.
J.A. Lory, J.F. Power, B. Eghball, and J.W. Doran. 1995. Spatial variability of chemical and physical parameters selected as indicators of nitrogen loss from beef cattle feedlots. p. 40. In Agronomy abstracts. ASA, Madison, WI.
J.F. Power, B. Eghball, and J.A. Lory. 1994. Utilization of nutrients in beef cattle feedlot manure in Northern Great Plains. p. 161-167. In Proceedings of the Great Plains Animal Wastes Conference on Confined Animal Production and Water Quality. October 19-21, 1994, Denver, CO.
J.A. Lory, M.P. Russelle, and G.W. Randall. 1992. Surface applied manure effects on soil inorganic N, and on N uptake and symbiotic N2 fixation of alfalfa. p. 150. In Agronomy abstracts. ASA, Madison, WI.
J.A. Lory, M.P. Russelle, and G.W. Randall. 1992. Manure N use efficiency of alfalfa (Medicago sativa) and its effect on symbiotic N2 fixation. p. 76. In Abstracts of the First Int. Crop Science Congress, Ames, IA.
Selected Extension Publications 1992-1997
J.A. Lory. Using phosphorous and nitrogen from manure. Commercial Agriculture Program White Paper, University of Missouri. 13 pages. February 1996.
R. Massey, and J.A. Lory. Manure Management. In Missouri Farm Financial Outlook, 1997. University of Missouri Extension and Department of Agricultural Economics. pp 50-51. November 1996.
J. Jennings, J.A. Lory, P.C. Scharf, and M. Nathan. Interpreting Missouri Soil Test Reports. University Extension, University of Missouri, Extension Guide G9112. December, 1996.
W. Casady, W. Johnson, A. Kendig, J.A. Lory, R. Massey, E. Stevens, and L. Sweets. 1996. Missouri System of Crop Production. University Extension, University of Missouri, Extension Manual 165. January 1997.
