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Hanna Poffenbarger

Posted by | March 13, 2021


Hanna Poffenbarger

Job Title:

Assistant Professor


Phone Number:

(859) 257-5925


Google Scholar Profile


Dr. Hanna Poffenbarger is an Assistant Professor of Soil Nutrient Management in the Department of Plant and Soil Sciences at University of Kentucky. Her research applies principles of agronomy, ecology, and biogeochemistry to investigate interactions between agricultural management and nutrient cycling using laboratory, greenhouse, and field experiments.

Research Areas:

  • Biological N fixation
  • Cover crops
  • N mineralization

Current N-related Projects:

  • Nitrogen decision support corn grain production
  • Cover crop effect on soybean biological N fixation


Thapa, R., H.J. Poffenbarger, K.L. Tully, V.J. Ackroyd, M.H. Kramer, and S.B. Mirsky. In Press. Biomass production and nitrogen accumulation by hairy vetch/cereal rye mixtures: A meta-analysis. Agronomy Journal.

Melkonian, J. H.J. Poffenbarger, S.B. Mirsky, M.R. Ryan, and B.N. Moebius-Clune. 2017. Estimating nitrogen mineralization from cover crop mixtures using the Precision Nitrogen Management model. Agronomy Journal 109: 1944-1959.

Vann, R.A., S.C. Reberg-Horton, H.J. Poffenbarger, G.M. Zinati, J.B. Moyer, and S.B. Mirsky. 2017. Starter fertilizer for managing cover crop-based organic corn. Agronomy Journal 109: 1-9.

Poffenbarger, H.J., D.W. Barker, M.J. Helmers, F.E. Miguez, D.C. Olk, J.E. Sawyer, J. Six, and M.J. Castellano. 2017. Maximum soil organic C storage in Midwest U.S. cropping systems when crops are optimally nitrogen-fertilized. PLOS ONE 12: e0172293.

Puntel, L.A., J.E. Sawyer, D.W. Barker, R. Dietzel, H.J. Poffenbarger, M.J. Castellano, K.J. Moore, P. Thorburn, and S.V. Archontoulis. 2016. Modeling long-term corn yield response to nitrogen rate and crop rotation. Frontiers in Plant Science 7: 1630.

Poffenbarger, H.J., S.B. Mirsky, M. Kramer, R.R. Weil, J.J. Meisinger, M.A. Cavigelli, and J.T. Spargo. 2015. Cover crop and poultry litter management influence spatiotemporal availability of topsoil nitrogen. Soil Science Society of America Journal 79: 1660-1673.

Poffenbarger, H.J., S.B. Mirsky, R.R. Weil, M. Kramer, J.T. Spargo, and M.A. Cavigelli. 2015. Legume proportion, poultry litter, and tillage effects on cover crop decomposition. Agronomy Journal 107: 2069-2082.

Poffenbarger, H.J., S.B. Mirsky, R.R. Weil, J.E. Maul, M. Kramer, J.T. Spargo, and M.A. Cavigelli. 2015. Biomass and nitrogen content of hairy vetch­–cereal rye cover crop mixtures as influenced by species proportions. Agronomy Journal 107: 2083-2096.

Poffenbarger, H.J., S.B. Mirsky, J.R. Teasdale, J.T. Spargo, M.A. Cavigelli, and M. Kramer. 2015. Nitrogen competition between corn and weeds in soils under organic and conventional management. Weed Science 63: 461­-476.