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The Center for Native Grasslands Management


Research Articles

Biomass/Bioenergy

Ashworth, A.J., P.D. Keyser, F.L. Allen, D.D. Tyler, A.M. Taylor, and C.P. West. 2015. Displacing inorganic nitrogen in lignocellulosic feedstock production systems. Agronomy Journal. 108: 109-116. doi:10.2134/agronj15.0033.

Ashworth, A.J., A.M. Taylor, D.L. Reed, F.L. Allen, P.D. Keyser, and D.D. Tyler. 2014. Environmental impact assessment of regional switchgrass feedstock production comparing nitrogen input scenarios and legume-intercropping systems. Journal of Cleaner Production 87 (2015) 227-234. (http://dx.doi.org/10.1016/j.jclepro.2014.10.002)

Ashworth, A.J., S.S. Sadaka, F.L. Allen, M.A. Sharara, and P.D. Keyser. 2014. Influence of pyrolysis temperature and production conditions on switchgrass biochar for use as a soil amendment. BioResources 9(4):7622-7635.

Sadaka S., M.A. Sharara, A.J. Ashworth, P. Keyser, F. Allen, and A. Wright. 2014. Characterization of biochar from switchgrass carbonization. Energies. 7(2):548-567.

Economics

Boyer, C.N., A.P. Griffith, D.W. McIntosh, G.E. Bates, P.D. Keyser, and B.C. English. 2015. Breakeven price of biomass for dual-purpose native warm-season grasses in Tennessee. Biomass and Bioenergy doi:10.1016/j.biombioe.2015.10.006

Lowe, J.K., II, C.N. Boyer, A.P. Griffith, J.C. Waller, G.E. Bates, P.D. Keyser, J.A. Larson, and E.D. Holcomb. 2016. The cost of feeding bred dairy heifers on native warm-season grasses and harvested feedstuffs. Journal of Dairy Science. 99:1-10. http://dx.doi.org/10.3168/jds.2015-9475.

Lowe, J.K., II, C.N. Boyer, A.P. Griffith, G.E. Bates, P.D. Keyser, J.C. Waller, J.A. Larson, and W.M. Backus. 2015 Profitability of beef and biomass production from native warm-season grasses in Tennessee. Biomass and Bioenergy. Agronomy Journal 107:1733-1740.

Establishment/Management

Ashworth, A.J., P.D. Keyser, E.D. Holcomb, and C.A. Harper. 2013. Yield and stand persistence of switchgrass as affected by cutting height and variety. Forage and Grazinglands. Published in Forage and Grazinglands DOI 10.1094/FG-2013-0043-RS.

Holcomb, E., P. Keyser, and C. Harper. 2014. Responses of planted native warm-season grasses to seasonality of fire in the Southeastern USA. Southeastern Naturalist. 13(2):221-236.

Keyser, P.D., A.J. Ashworth, F.L. Allen, and G.E. Bates. 2016. Dormant-season planting and seed-dormancy impacts on switchgrass establishment and yield. Crop Science. 56: 1-10. doi: 10.2135/cropsci2015.03.0144.

Keyser, P.D. A.J. Ashworth, F.L. Allen, and G.E. Bates. 2016. Evaluation of small grain cover crops to enhance switchgrass establishment. Crop Science. 56: 2062-2071. doi: 10.2135/cropsci2015.12.0783.

Forages

Keyser, P.D., E.D. Holcomb, C.M. Lituma, G.E. Bates, J.C. Waller, C.N. Boyer, and J.T. Mulliniks. 2016. Forage attributes and animal performance from native grass inter-seeded with red clover. Agronomy Journal. 108: 373-383. doi:10.2134/agronj2015.0198.

McIntosh, D.W., G.E. Bates, P.D. Keyser, F.L. Allen, C.A. Harper, J.C. Waller, J.L. Birckhead, and W.M. Backus. 2016. The impact of forage harvest timing on biomass quality from native warm-season grass mixtures. Agronomy Journal. 108:17. doi:10.2134/agronj2015.0560.

McIntosh, D.W., G.E. Bates, P.D. Keyser, F.L. Allen, C.A. Harper, J.C. Waller, J.L. Birckhead, W.M. Backus, and J.E. Beeler. 2015. The impact of harvest timing on biomass yield from native warm-season grass mixtures. Agronomy Journal. 107: 2321-2326. doi:10.2134/agronj15.0251.

Legumes

Ashworth, A.J., C.P West, F.L. Allen, P.D. Keyser, S. Weiss, D.D. Tyler, and A.M. Taylor, K.L. Warwick, and K.P. Beamer. 2015. Biologically fixed nitrogen in legume intercropped systems: comparison of N-difference and 15N enrichment techniques. Agronomy Journal. 107:1-12. DOI:10.2134/agronj14.0639.

Ashworth A.J., F.L. Allen, P.D. Keyser, D.D. Tyler, A.M. Saxton, and A.M. Taylor. 2015. Switchgrass yield and stand dynamics from legume intercropping based on seeding rate and harvest management. Journal of Soil and Water Conservation. 70(6): 374-384. doi:10.2489/jswc.70.6.374.

Warwick, K., F.L. Allen, P.D. Keyser, AJ Ashworth, G.E. Bates, D.D. Tyler, P.L. Lambdin, and C.A. Harper. 2016. Biomass and integrated forage/biomass yields of switchgrass as affected by intercropped cool- and warm-season legumes. Journal of Soil and Water Conservation 71:21-28. Doi: 10.2489/jswc.71.1.21

Savannahs/Woodlands

Barrioz, S, P. Keyser, D. Buckley, D. Buehler, and C. Harper. 2013. Vegetation and Avian Response to Oak Savanna Restoration in the Mid-South USA. American Midland Naturalist. 169:194-213.

Cox, MR, EV Willcox, PD Keyser, AL Vander Yacht. 2016. Bat response to prescribed fire and overstory thinning in hardwood forest on the Cumberland Plateau, Tennessee. Forest Ecology and Management. 359: 221-231. doi.org/10.1016/j.foreco.2015.09.048.

Vander Yacht, A.L., P.D. Keyser, D.A. Buehler, C.A. Harper, D.S. Buckley, R.D. Applegate. 2016. Avian Occupancy Response to Oak Woodland and Savanna Restoration. Journal of Wildlife Management. 80:10911105 DOI: 10.1002/jwmg.21097.

Wildlife

Birckhead, J.L., C.A. Harper, P.D. Keyser, D. McIntosh, E.D. Holcomb, G.E. Bates, J.C. Waller. 2014. Structure of avian habitat following hay and biofuels production in native warm-season grass stands in the Mid-South. Journal of the Southeastern Association of Fish and Wildlife Agencies 1:115121.

Brooke, J.M., D.C. Peters, A.M. Unger, E.P. Tanner, C.A. Harper, P.D. Keyser, J.D. Clark, J.J. Morgan. 2015. Habitat manipulation influences northern bobwhite resource selection on a reclaimed surface mine. Journal of Wildlife Management 79:12641276.

Brooke, J.M., E.P. Tanner, D.C. Peters, A.M. Tanner, C.A. Harper, P.D. Keyser, J.D. Clark, J.J. Morgan. 2016. Northern bobwhite breeding season ecology and resource selection on a managed reclaimed surface mine in Kentucky. Journal of Wildlife Management. In Press.

Harper, C.A., J.L. Birckhead, P.D. Keyser, J.C. Waller, W.M. Backus, G.E. Bates, E.D. Holcomb, and J.M. Brooke. 2015. Avian habitat following grazing native warm-season forages in the Mid-South United States. Range Ecology and Management. 68:166-172.

Peters, D., J. Brooke, E. Tanner, A. Unger, P.D. Keyser. C.A. Harper, J. Clark, J.J. Morgan. 2015. Impact of experimental habitat manipulation on northern bobwhite survival. Journal of Wildlife Management 79:605-617.

Unger, A.M., E.P. Tanner, C.A. Harper, P.D. Keyser, J.J. Morgan. 2012. Northern bobwhite survival related to movement on a reclaimed surface coal mine. Proceedings, Quail VII, January 10-13, 2012, Tucson, AZ: 223-228.

Unger, A.M., E.P. Tanner, C.A. Harper, P.D. Keyser, F.T. Van Manen, J.J. Morgan, and D.L. Baxley. 2015. Northern bobwhite seasonal habitat selection on a reclaimed surface coal mine in Kentucky. Journal of the Southeastern Association of Fish and Wildlife Agencies 2:235-246.

Tanner, E.P., A.M. Unger, P.D. Keyser, C.A. Harper, J.D. Clark, J.J. Morgan. 2012. Survival of radio-marked versus leg-banded northern bobwhite in Kentucky. Proceedings, Quail VII, January 10-13, 2012, Tucson, AZ: 212216.

West, A.S., P.D. Keyser, and J.J. Morgan. 2012. Northern Bobwhite Survival, Nest Success, and Habitat Use in Kentucky During the Breeding Season. Proceedings, Quail VII, January 10-13, 2012, Tucson, AZ: 217222.

West, A.S., P.D. Keyser, C.M. Lituma, D.A. Buehler, R.D. Applegate, J.J. Morgan. 2016. Grasslands Bird Occupancy of Production Stands of Native Warm-Season Grass in the Mid-South USA. Journal of Wildlife Management. 80(6):10811090; 2016; DOI: 10.1002/jwmg.21103.