EDUCATION:  Southern Ill. Univ. B.S. 1970 Plant Industries Univ. of Minnesota M.S. 1974 Soil Science/Biochemistry Univ. of Minnesota Ph.D. 1978 Soil Science/Plant Physiology EXPERIENCE: 1970-1972 US Army 1972-1974 Research Assistant, University of Minnesota 1974-1975 Research and Production Assistant, Research Seeds, Inc., St. Joseph, MO. 1975-1977 Research Assistant, University of Minnesota 1978-1979 Visiting Assistant Professor, NMSU 1980-1985 Assistant Professor, NMSU 1985-1990 Associate Professor, NMSU 1991-Present Professor, NMSU PROFESSIONAL CERTIFICATION: ARCPACS Certified Professional Soil Scientist ARCPACS Certified Professional Agronomist/Crop Advisor

soil microbiology-biochemistryfertility, particularly how soil microbial processes influence plant growth and environmental contamination.  particular interest are nodulation and N2 fixation of legumes, N mineralization and transformations in green manures, biosolids and manure amended soils, N cycling in agricultural and natural ecosystems, reclamation of disturbed lands, and microbial manipulation of contaminated soils.