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Forest and Shade Tree Health PublicationsBishop, R. J., and Jacobi, W. R. 2003. Insects associated with black stain root disease centers in pinyon pine stands. Southwestern Entomologist 78: 55-61.
Bernard, K. E., Dennis, C. and Jacobi, W. R. 1999. Protecting trees during construction. Colorado State University, Cooperative Extension Fact Sheet 7.420. 4pp.
Burks, S., Jacobi, W.R. and McIntyre, G.A. 1998. Cytospora canker development on aspen in response to nitrogen fertilization. J. Arboriculture.24: 28-34.
Colorado State University Cooperative Extension Service. 2000. Insects and Diseases of Woody Plants of the Central Rockies. Bulletin 506. 284 pp. W. R. Jacobi, Co editor.
Francis, C., Jacobi, W. R. and Cranshaw, W. S. 1999. Pinyon pine diseases and insects. Colorado State University, Cooperative Extension Fact Sheet, 2.949. 8 pp.
Guyon, J.C. 1993. Selected environmental stresses and two canker diseases of trees. M.S. Thesis, Colorado State University. 114 pp.
Guyon, J.C., Jacobi, W.R. and McIntyre, G.A. 1996. Effects of environmental stress on the development of Cytospora canker of aspen. Plant Dis. 80:1320-1326.
Kallas, M.A., Jacobi, W.R., and Reich, R.M. 1996. Hazard rating model for Armillaria root disease in the Black Hills National Forest. In: Proceedings of the 44th Annual Western International Forest Disease Work Conference (abstract).
Kallas, M.A., Jacobi, W.R., Reich, R.M. and Lundquist J.E. 1996. Use of geographic information systems to study Armillaria root disease distribution in the Black Hills. Phytopathology 86:Vol 11: S102 (abstract).
Wettstein, C .A. 1993. Environmental Influences on Aspen Regeneration Failure. Phytopathology 83:1411 (abstract).
Jacobi, W. R. and zumBrunnen, J. R. 1995. Douglas-fir resistance to black stain root disease. In: Proceedings of the 43rd Annual Western International Forest Disease Work Conference (abstract).
Jacobi, W.R., Kelly, E.F., Troendle, C.A., Angwin, P.A., Wettstein, C .A. 1998. Environmental conditions and aspen regeneration failure. USDA, For. Serv. Rocky Mt Reg., For. Health Management, Tech. Rep. R2-60 24pp.
Jacobi, W. R. 1999. Aspen and poplar leaf spots. Colorado State University, Cooperative Extension Fact Sheet 2.920. 4pp.
Jacobi, W.R., Zeglen, S., Muir, J.A., and Hunt, R. S. 2002. Black Stain Root Disease Mortality Rates on Douglas-fir in Coastal British Columbia. In: Proceedings of the 50th Annual Western International Forest Disease Work Conference(abstract).
Kearns, H.S.J., Jacobi, W.R., Sullivan, K., and Geils, B.W. 2003. Is the alternate host for white pine blister rust present in Colorado? In: Proceedings of the 51th Annual Western International Forest Disease Work Conference (abstract).
Kearns, H.S.J. and Jacobi, W. R. 2001. Black stain root disease in the pinyon-juniper woodlands of southwestern Colorado. In: Proceedings of the 49th Annual Western International Forest Disease Work Conference (abstract).
Kearns, H.S.J. and Jacobi, W.R. 2005. Impacts of black stain root disease in recently formed mortality centers in the pinyon-juniper woodlands of southwestern Colorado. Can. J. For. Res. 35:461-471.
Kearns, H.S.J., Jacobi, W.R., and Harris, J.L. 2002. The Distribution of White Pine Blister Rust in Southeast Wyoming In: Proceedings of the 50th Annual Western International Forest Disease Work Conference (abstract).
Kearns, H. S. J., Jacobi, W. R., and Johnson, D. W. 2005. Persistence of Pinyon Pine Snags and Logs in Southwestern Colorado. Western Journal of Applied Forestry 20(4):247-252.
Kepley, J. B. and Jacobi, W. R. 2000. Pathogenicity of Cytospora fungi and six hardwood species. J. Arboriculture. 26:326-332.
Klutsch, J.G., R.D. Beam, W.R. Jacobi, J.F. Negrün. 2005. Stand characteristics and fuel loads of dwarf mistletoe and mountain pine beetle in Colorado’s Northern Front Range ponderosa pine. In Guyon, J.C. comp. 2006
Klutsch, J.G., R.D. Beam, W.R. Jacobi, J.F. Negrün. 2006. Stand characteristics and fuel loads in ponderosa pine infested with southwestern dwarf mistletoe in Colorado’s Northern Front Range. Phytopathology 96:S62 (abstract). Koski, R.D. and Jacobi, W. R. 2003. Tree pathogen survival in wood chip mulch. Phytopathology 93: S47 (Abstr.)
Koski, R.D. and Jacobi, W. R. 2003. Tree pathogen survival in wood chip mulch. In: Proceedings of the 51th Annual Western International Forest Disease Work Conference (abstract).
Koski, R. and Jacobi, W. R. 2004. Tree pathogen survival in chipped wood mulch. J. Arboriculture 30:165-171.
Kerbs, S. T. and Jacobi, W. R. 1995. Long term flooding stress and Thyronectria Canker on Honeylocust trees. In: Proceedings of the 43rd Annual Western International Forest Disease Work Conference (abstract).
McIntyre, G.A., Jacobi, W.R. and Ramaley, A.W. 1996. Factors affecting Cytospora canker occurrence on aspen. J. Arboriculture 22:229-233.
Omdahl, D.W., Shaw, C.G., III, Jacobi, W.R., Wagner, T.C. 1993. Pathogenicity and Virulence of Armillaria ostoyae on Eight Forest Tree Species. Phytopathology 83:1365 (abstract).
Omdal, D. W., Shaw, C. G., III, Jacobi, W. R., and Wager, T. C. 1995. Variation in pathogenicity and virulence of isolates of Armillaria ostoyae on eight tree species. Plant Dis. 79:939-944.
Omdal, D.W., Shaw, C.G. III and Jacobi, W.R.. 2001. Evaluation of three machines to remove Armillaria-and Annosum- infected stumps. Western J. Applied Forestry 16:22-25.
Omdal, D.W., Jacobi, W.R. and Shaw, C.G. III. 2001. Estimating large-root biomass from breast-height diameters for ponderosa pine in northern New Mexico. Western J. Applied Forestry 16:18-21.
Omdal, D.W. Shaw, C.G. III, and Jacobi, W.R. 2004. Symptom expression in conifers infected with Armillaria ostoyae and Heterobasidion annosum. Can. J. For. Res. 34:1210-1219.
Sclar, D.C., Cranshaw, W. S. and Jacobi, W.R. 1997. Integrated pest management practices in Colorado: A survey of woody plant nurseries and homeowners, 1995-96.Colorado State University, Tech. Bull. TB97-2 . 17 pp.
Smith, E.L.; Geils, B.W.; Kearns, H.S.; and W.R. Jacobi. 2002. The biogeography of blister rust invasions: the challenges of new outbreaks. 2002 Ecological Society of America Annual Meeting; Symposium on "The Rapid Decline of White Pine Ecosystems of the West: Causes,Consequences, and Restoration Strategies"; August 5-9, 2002, Tucson, AZ (abstract).
Swift, C. W., Jacobi, W. R., Schomaker, M. E. and Leatherman, D. A. 1992. Environmental disorders of woody plants. Service in Action Sheet . Colo. State Univ. Extn. Serv. No. 2.932.
Walla. J. A., Jacobi, W. R., Tisserat, N. A., Harrell, M, O., Ball, J. J., Neil, G. B., Reynard, D. A., Guo, Y. H. and Spiegel, L. 2000. Condition of green ash, incidence of ash yellows phytoplasmas, and their association in the Great Plains and Rocky Mountain regions of North America. Plant Dis. 84:268-274.
Walla, J. A., Jacobi, W. R. and Schmidt, R. A. 2003. Forest Pathology for the last century: An overview of the symposium. Phytopathology 93: 1037-1038.
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