Nancy Jo Ehlke

Professor
[email protected]
612-625-1791
402 Hayes Hall
Education

Ph.D.: Pennsylvania State University (1987)
Year Appointed: 1986
Rank: Professor, former Department Head

Areas of Interest

Turf grasses and native legumes genetics and breeding; management strategies

Research

I conduct research on the genetics and breeding methodologies of turf grasses and native legumes and develop management strategies which maximize the profitability and sustainability of grass and legume seed production in northern Minnesota.

Select Publications

Breuillin-Sessoms, Florence, Dominic P. Petrella, Nancy J. Ehlke, Donn Vellekson, and Eric Watkins.  2023. Spring wheat canopy effects on light dynamics and yield of intercropped fine fescues. Crop Science. 63:  3096-3109. DOI:10.1002/csc2.21062.

Wiering, N.P., N.J. Ehlke, D. Catalano, K. Martinson, C.C. Sheaffer. 2021. Forage potential of winter-hardy perennial ryegrass populations in monoculture and binary alfalfa mixture. Agronomy Journal: 113: 5183 - 5195. https://doi.org/10.1002/agj2.20837

Kucek, L., M.D. Azevedo, S.S. Eagen, N.J. Ehlke, R.J. Hayes, S.B. Mirsky, C. Reberg-Horton, M.R. Ryan, S. Wayman, N. Wiering, H. Riday. 2020. Seed Dormancy in Hairy Vetch (Vicia villosa Roth) Is Influenced by Genotype and Environment. Agronomy. doi.org/10.3390/agronomy10111804

Catalano, D.N., C. C. Sheaffer, N.P. Wiering, A.M. Grev, N.J. Ehlke, E. Mousel, and K.L. Martinson.  2020.  Yield, persistence, forage nutritive value, and preference of perennial ryegrass under grazing. Agronomy Journal 112:4182–4194.

Kucek, L., H. Riday, B. Rufener, A. Burke, N. Ehlke, S. Mirsky, C. Reberg-Horton, M. Ryan, S. Eagen, S. Wayman, & N. Wiering, 2020.  Pod dehiscence in Hairy Vetch (Vicia villosa Roth). Frontiers in Plant Science:  doi: 10:3389/fpls.2020.00082.

Heineck, G.C., N.J. Ehlke, K.R. Altendorf, R.F. Denison, J.M. Jungers, Eric G. Lamb, E. Watkins. 2020. Relationships and influence of yield components on spaced-plant and sward seed yield in perennial ryegrass. Grass and Forage Science 75:  424-437. 

Heineck, G., Y. Qiu, N.J. Ehlke, E. Watkins. 2020. The fungal endophyte Epichloë festucae var. lolii plays a limited role in mediating crown rust severity in perennial ryegrass. Crop Science. 60: 1040-1104.  

 Wiering, N.P., N.J. Ehlke, and C.C. Sheaffer. 2019. Lidar and RGB image analysis to predict hairy vetch biomass in breeding nurseries. Plant Phenome Journal. 2:1-8 (2019) doi:10.2135/tppj2019.02.0003 

Wiering, Nicholas P., Claire Flavin, Craig C. Sheaffer, Garett C. Heineck, Walid Sadok, and Nancy J. Ehlke.  2018.  Winter-hardiness and freezing tolerance in Hairy Vetch (Vicia villosa R.).  Crop Science. 58:  1594-1604.  doi: 10.2135/cropsci2017.12.0748. 

Heineck, G.C., E. Watkins and N.J. Ehlke. 2018.  The fungal endophyte Epichloë festucae var. lolii does not improve the freezing tolerance of perennial ryegrass.  Crop Science. 58: 1788-1800.  doi:  10.2135/cropsci2018.12.0731.

Heineck, G., E. Watkins, and N.J. Ehlke. 2017. Exploring Alternative Management Options for Multiyear Perennial Ryegrass Seed Production in Northern Minnesota. Crop Science. 58:426-434.