Dr. James (Jim) Pierre Muir

J Muir







Professor – Grassland Ecology

  • PhD. Agronomy Univ. of Florida 1989
  • MSc. Agronomy Univ. of Florida, 1985
  • Bsc. Biology (Ecology) Wheaton College, Illinois 1981

Email:   j-muir@tamu.edu
Phone:   254.968.4144
Fax:      254.965.3759

Dr. Jim Muir has been a grassland ecologist and plant scientist at Texas A&M AgriLife Research since 1997. Prior to that he worked in Mozambique Africa as a researcher, educator and community developer and continues to cooperate with researchers in South America, Africa and Europe. His primary focus is on cultivated pasture agronomy although he expands this to other areas including rangeland management, cellulosic biofuels, small ruminant health, and environmental sciences.


  • 2013-Present Tarleton State University partial appointment to the Wildlife, Sustainability and Ecosystems Department
  • 1997-Present Texas AgriLife Research, Stephenville, Professor
  • 1997-Present Texas A&M Soil & Crop Science Department, Professor
  • 1997 Heifer Project Mozambique, County Director
  • 1989-1996 Instituto de Produção Animal, Mozambique


  • Domesticating native herbaceous species for pastures, rangeland rehabilitation, roadside and pipeline revegetation, and grassland restoration.
  • Harnessing legume condensed tannins for ruminant nutrition, health and environmental impact mitigation.
  • Multiple-use legumes for forage, wildlife, bioenergy feedstock, soil fertility and phytoremediation.



  • Fellow, Crop Science Society of America, 2014
  • Texas A&M AgriLife Research Fellow, 2013
  • Fellow, American Society of Agronomy, 2009
  • Texas A&M Regents Fellow Service Award, 2011
  • Texas A&M System Vice-chancellor’s Award for Excellence in Research, 2010
  • Merit Award, American Forage & Grassland Council, 2008.
  • Special Achievement Award for Research, Soil & Crop Science Department, Texas A&M University, 2004.
  • Agronomy Journal Editors’ Citation for Excellence in Manuscript Review, 2002.
  • Fulbright-Hays Graduate Fellowship, Mozambique, 1988.
  • Foreign Language Area Scholarships, University of Florida, 1986 & 1987.


  • V International Scientific Agricultural Symposium for Graduate Students, Bydgoszcz University of Technology and Life Sciences, Poland, 2014. “Agricultural and natural resource researchers: impartial keepers of the farm gate?”
  • XII Jornada de Ensino, Pesquisa e Extensao, Universidade Federal Rural de Pernambuco, Recife Brazil, “Innovate or perish: a question of relevance in scientific research.”
  • Congress on Savannas and Wetlands Alternatives, Campo Grande Brazil, 2012. “Forage management in savannas: variability and opportunities for sustainable use.”
  • Launch of the Institutional Research Theme and Institute for Food, Nutrition and Well-being. Indaba. University of Pretoria, South Africa. 2012. “Keys to successful international cooperation in research.”
  • X International Goat Association conference, Recife Brazil, 2010. “The multiple roles of condensed tannins in the small ruminant ecosystem.”
  • XVI Reunion Internacional sobre produccion de carne y leche en climas calidos, Mexicali Mexico, 2009. “Forage production for milk and meat in an uncertain future.”
  • Argentine Association of Animal Production, Malargüe, Argentina, 2009. “Domesticating native leguminous forage germplasm for animal production.”
  • Instituto Nacional de Pecuaria, Portugal, 2008. “O papel dos taninos condensados no ecosistema do ruminante.”
  • International Livestock Research Institute, Kenya “The role of condensed tannins in ruminant systems.”


  • ‘Latitude 34’ perennial peanut (Arachis glabrata var. glabrata), 2010
    Muir et al. Plant Registrations 4:106-109.
  • ‘Rio Rojo’ trailing wild-bean (Strophostyles leiosperma), 2010
    Muir et al. J. Plant Registrations 4:103-105.
  • ‘Plains’ prairie acacia germplasm (Acacia angustissima var. hirta), 2008
    NRCS et al.
  • ‘Rio Verde’ lablab (Lablab purpureus), 2008
    Smith et al.
  • ‘Devine’ little burr medic (Medicago minima), 2007
    Ocumpaugh et al.
  • ‘Beewild’ rayado bundleflower (Desmanthus bicornutus), 2004
    Ocumpaugh et al. (four lines)
  • ‘Armadillo’ burr medic (Medicago polymorpha), 2003
    Ocumpaugh et al.


Muir, J.P., W.D. Pitman, J.L. Foster and J.C. Dubeux, Jr. 2015. Sustainable intensification of cultivated pastures using multiple herbivore species. African Journal Range and Forage Science. 32:97-112.

Tedeschi, L., J.P. Muir, D.G. Riley, and D.G. Fox. 2015. The role of ruminant animals in sustainable livestock intensification programs. International Journal of Sustainable Development & World Ecology 22:452-465.

Stewart, W.C., T.R. Whitney, E.J. Scholljegerdes, H.D. Naumann, N.M. Cherry, J.P. Muir, B.D. Lambert, J.W. Walker, R.P. Adams, K.D. Welch, D.R. Gardner, and R.E. Estell. 2015. Effects of Juniperus species and stage of maturity on nutritional, in vitro digestive and plant secondary compound characteristics. Journal of Animal Science 93:4034-4047. doi:10.2527/jas.2015-9274

Bueno, I.C.S., R.A. Brandi, R. Franolin, G. Benetel, G.M. Fagundes, A.L. Abdalla, H. Louvandini, and J.P. Muir. 2015. In vitro methane production and tolerance to condensed tannins in five ruminant species. Animal Feed Science & Technology 205:1-9.

Apolinário, V.X.O., J.C.B. Dubeux, Jr., M.A. Lira, Rinaldo L.C. Ferreira, A.C.L. Mello, M.V.F. Santos,, E.V.S.S.B. Sampaio, and J.P. Muir. 2015. Tree legumes provide marketable wood and add nitrogen in warm-climate silvopasture systems. Agronomy Journal 107:1915-1921.

Naumann, H.D., B.W Lambert, S. Armstrong, L.O. Tedeschi, J.P. Muir, and M. Ellersieck. 2015. Effect of replacing alfalfa with panicled-tick clover or sericea lespedeza in corn-alfalfa based substrates on in vitro ruminal methane production. J. Dairy Sci. 98:3980-3987.

Faria de Oliveira, O., R.L.C. Ferreira, A.C.S. de Almeida, M.V.F dos Santos, J.P. Muir, M.V. da Cunha, M. De A. Lira. 2015. Seasonal and rainfall gradient effects on condensed tannin concentrations of woody rangeland species. Ciências Agrária 10:165-169.

Muir, J.P., J.C.B. Dubeux, Jr., J.L. Foster, and W.D. Pitman. 2014. The future of warm-season, tropical, and sub-tropical forage legumes in sustainable pastures and rangelands. African Journal Range and Forage Science 31:187-198.

Tedeschi, L.O., C.A. Ramírez-Restrepo, and J.P. Muir. 2014. Developing a conceptual model of possible benefits of condensed tannins for ruminant production. Animal 8:1095-1105.

Muir, J.P., J.C.B. Dubeux, Jr., J.L. Foster, and W.D. Pitman. 2014. The future of warm-season, tropical, and sub-tropical forage legumes in sustainable pastures and rangelands. African Journal Range and Forage Science 31:187-198.


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