Research Interests:

• Computer-controlled fertigation of nursery crops
• Grain drying and grain quality
• Taxus/taxol production
• Composting

 B.S. - 1962 - The Ohio State University (Agricultural Engineering)
M.S. - 1962 - The Ohio State University (Agricultural Engineering)
Ph.D. - 1968 - University of California, Davis (Agricultural Engineering)
 

Recent Publications:

 Hansen, R.C., M.A. Berry, H.M. Keener and R.J. Gustafson. 1996. Current Grain Drying Practices in Ohio. Applied Engineering in Agriculture 12(1):65-69

Elwell, D.L., H.M. Keener and R.C. Hansen. 1996. Controlled, high-rate composting of mixtures of food residuals, yard trimmings and chicken manure. Compost Science and Utilization 4(1):6-15

Hansen, R.C., K.D. Cochran, H.M. Keener and E.M. Croom, Jr. 1994. Taxus populations and clippings yields at commercial nurseries. HortTechnology 4(4):372-377

Hansen, R.C., and H.M. Keener. 1993. Thin layer drying of cultivated Taxus clippings. TRANSACTIONS of the ASAE 36(6):1873-1877

Hansen, R.C., H.M. Keener, C. Marugg, W.A. Dick, and H.A.J. Hoitink,. 1993. Composting of poultry manure. pp. 131-153. Science and Engineering of Composting: Design, Environmental, Microbiological and Utilization Aspects. H.A.J. Hoitink and H.M. Keener eds. Worthington, OH: Renaissance Publications.