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The Center for Agroforestry

Meet the External Collaborators

Jerry Van Sambeek

J. W. ‘Jerry’ Van Sambeek, Ph.D.


Research Plant Physiologists
North Central Research Station, US Forest Service

202 ABNR, USFS
Columbia, MO 65211
(573) 875-5341 ext. 233
573-864-8117
vansambeekj@missouri.edu

The ground cover in hardwood and agroforestry plantings can substantially alter tree establishment, growth, and productivity. Based on past research, the best cover and nurse crops for improving tree growth have been introduced forage legumes and woody shrubs, several of which are now considered invasive species. Knowing which plants are shade or flood tolerance for use in hardwood and agroforestry plantings will increase biodiversity and habitats for a wider range of other species. My research is trying to identify native ground covers or woody nurse crops that are easy to establish and maintain, shade tolerant, environmentally friendly, and compete minimally with hardwood seedlings and saplings. We know the addition of nitrogen-fixing plants in tree plantings can enhance establishment and early growth of black walnut; however, we know little about the interaction between nitrogen-fixing plants, oaks, pecans, and other Central Hardwood species. My studies look at native legumes and grasses to identify species to introduce in plantings and orchards that are less competitive than the introduced forage species. I continue to add new information to the vegetation management database that I use to evaluate response of hardwood seedlings and saplings to various ground covers and other establishment practices. Percent change in tree growth for saplings grown with different ground covers are compared to growth of saplings in vegetation-free plots or plots with weeds from personal research, file reports, and published information. This allows us to make ground cover recommendations for tree plantings without having to field test all the possible combinations of tree species and ground covers. Other research looks at ways to improve hardwood planting stock or planting methods to improve post-planting survival and growth in bottomlands, orchards, and urban plantings. In addition, I try to maintain an active technology transfer program that includes co-editing proceedings, serving as a Web-based black walnut expert for several organizations, and regularly preparing content for several user-oriented newsletters.

Publications

Vegetation Management in Hardwood Tree Plantings

  • Van Sambeek, J. W.; McGraw, Robert L.; Navarrete-Tindall, Nadia E.; and Buselinck, Paul R. 2002. Response of four oak species to herbaceous perennial legumes in an upland oak savanna restoration project. P. 19. 8th Workshop on Seedling Physiology and Growth Problems in Oak Plantings. USDA Forest Service General Technical Report NC-244.
  • McGraw, Robert L.; Navarrete-Tindall, Nadia E.; and Van Sambeek, J. W. 2001. Effects of shade on growth and nodulation of six native legumes with potential for use in agroforestry. P. 316. Shroeder, W. and Kort, J., eds., Proceedings, 7th Biennial Conference on Agroforestry in North America.
  • Huck, M. B.; Kerley, M. S.; Garrett, H. E.; McGraw, R. L.; Van Sambeek, J. W.; and Navarrete-Tindall, N. E. 2001. Effect of shade on forage quality. P. 316. Shroeder, W. and Kort, J., eds., Proceedings, 7th Biennial Conference on Agroforestry in North America.
  • Van Sambeek, J. W. and Preece, John E. 1999. Hybrid poplar establishment in tilled ground or grass sod using polyethylene films for weed control. HortScience 34(3):444.
  • Van Sambeek, J. W.; Garrett, H. Gene, and Jones, James E. 1998. Ground covers to maximize ease of management, tree vigor, and ease of harvest. Pp. 107-111. IN: Jones, James E., Mueller, Rita, and Van Sambeek, J. W., eds., Nut Production Handbook for Eastern Black Walnut, Southwest Missouri RC&D, Republic, Missouri.
  • Jones, James E.; Garrett, H. "Gene"; and Van Sambeek, J. W. 1997. Hammons' Sho-Neff Plantation - Combining research, technology transfer, and agribusiness. pp. 219-223. IN: Knowledge for the Future of Black Walnut (Proceedings, Fifth Black Walnut Symposium), USDA Forest Service General Technical Report NC-191.
  • Van Sambeek, J. W.; Kobe, Jane M.; and Fralish, James S. 1997. Interference with shoot growth and flowering of dittany (Cunila origanoides (L.) Britton) by hardwood leachates. pp. 294-303. IN: Proceedings, Eleventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC-188.
  • Navarrete-Tindall, N. E. and Van Sambeek, J. W. 1996. Symbiotic promiscuity of rhizobia strains from Gliricidia sepium on legumes native to El Salvador. Forest, Farm, and Community Tree Research Reports 1:1-9.
  • Navarrete-Tindall, N. E.; Van Sambeek, J. W.; and Klubek, B. P. 1996. Infectiveness and efficiency of Gliricidia sepium rhizobia strains from different elevations in El Salvador. Forest, Farm, and Community Tree Research Reports 1:78-83.
  • Van Sambeek, J. W. 1993. Intercropping legumes reduce incidences of anthracnose in black walnut saplings. p. 64. Schultz, Richard C. and Colletti, Joe P., eds., Opportunities for Agroforestry in the Temperate Zone Worldwide (Proceedings of the Third North American Agroforestry Conference), Iowa State University Press.
  • Van Sambeek, J. W. and McBride, F. D. 1991. Grass control improves early growth of black walnut more than either deep ripping or irrigation. pp. 42-57. IN: Garrett, H. E. 'Gene', ed., The Second Conference on Agroforestry in North American, University of Missouri. Also reprinted in 1993 in 84th Annual Report of the Northern Nut Growers Association 84:9-19.
  • Van Sambeek, J. W. 1989. Vegetation management in established stands. pp. 114-125. In: Phelps, John E., ed., The Continuing Quest for Quality (Proceedings, 4th Black Walnut Symposium), Walnut Council, Indianapolis, IN.
  • Van Sambeek, J. W.; Schlesinger, Richard C.; Roth, Paul L.; and Bocoum, Ibrahima. 1989. Revitalizing slow-growth black walnut plantings. pp. 108-114. IN: Proceedings of the Seventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC-132.
  • Van Sambeek, J. W. 1988. Soil-improving intercrops for black walnut. Walnut Council Bulletin 15(1):2-6, 11.
  • Van Sambeek, J. W. 1988. Ground cover management. IN: Burde, E. Lucy, ed., Walnut Notes, USDA Forest Service, North Central Forest Experiment Station. Note 2.06. 3 p.
  • Van Sambeek, J. W. 1988. Interplantings. IN: Burde, E. Lucy, ed., Walnut Notes, USDA Forest Service, North Central Forest Experiment Station. Note 2.09. 3 p.
  • Rink, George and Van Sambeek, J. W. 1987. Variation among four white ash families in response to competition and allelopathy. Forest Ecology and Management 18(1):127-134.
  • Van Sambeek, J. W.; Ponder, Felix, Jr.; and Rietveld, W. J. 1986. Legumes increase growth and alter foliage nutrient levels of black walnut saplings. Forest Ecology and Management 17(3/4):159-167.
  • Rink, George and Van Sambeek, J. W. 1985. Variation among black walnut seedling families in resistance to competition and allelopathy. Plant and Soil 88(1):3-10.
  • Van Sambeek, J. W. 1985. Intercropping black walnut. 76th Annual Report of the Northern Nut Growers Association 76:157-162.
  • Schlesinger, Richard C. and Van Sambeek, Jerome W. 1985. Ground cover management can revitalize black walnut trees. Northern Journal of Applied Forestry 3(2):49-51.
  • Van Sambeek, J. W.; Schlesinger, R. C.; Ponder, Felix, Jr.; and Rietveld, W. J. 1985. Actinorhizal species as nurse crops for black walnut. pp. 257-263. IN: Dawson, Jeffrey O. and Majerus, Kimberly A., eds., Proceedings, 5th Central Hardwood Forest Conference, Society of American Foresters Publication 85-05.
  • Van Sambeek, J. W. and Rietveld, W. J. 1983. Leguminous cover crops can suppress weeds and accelerate growth of black walnut seedlings in intensively cultured plantations. pp. 229-243. IN: Muller, Robert N., ed., Proceedings, 4th Central Hardwood Forest Conference, University of Kentucky Press.

Hardwood Vegetative Propagation

  • Van Sambeek, J. W.; Preece, J. E.; and Navarrete-Tindall, Nadia E. 2001. Comparative in vitro culture of whitet and green ash from seed to plantlet production. Combined Proceedings of the International Plant Propagators Society 51: in press.
  • Coggeshall, Mark V. and Van Sambeek, J. W. 2001. Developing a subirrigation system with potential for hardwood propagation. Combined Proceedings of the International Plant Propagators Society 51: in press.
  • Navarrete-Tindall, Nadia E.; Van Sambeek, J. W.; Coggeshall, Mark V.; and McGraw, Robert L. 2001. Propagation of the endangered legume Amorpha nitens and the common shrub legume Amorpha fruticosa. Combined Proceedings of the International Plant Propagators Society 51: in press.
  • Van Sambeek, J. W. and Preece, J. E. 2000. Forcing environment affects epicormic sprout production from branch segments for vegetative propagation of adult hardwoods. Combined Proceedings of the International Plant Propagators Society 49: 399-401.
  • Van Sambeek, J. W.; Lambus, Lisa J.; and Preece, John E. 1998. Production of epicormic sprouts on branch segments of adult black walnut for in vitro culture. 88th Annual Report of the Northern Nut Growers Association 88: 93-104.
  • Van Sambeek, J. W.; Lambus, Lisa J.; Khan, Saqib B.; and Preece, John E. 1997. In vitro establishment of tissues from adult black walnut. pp. 78-92. IN: Knowledge for the Future of Black Walnut (Proceedings, Fifth Black Walnut Symposium), USDA Forest Service General Technical Report NC-191.
  • Van Sambeek, J. W.; Preece, John E.; Huetteman, Carl A.; and Roth, Paul L. 1995. Use of plastic films for weed control during field establishment of micropropagated hardwoods. pp. 496-506. IN: Proceedings, 10th Central Hardwood Forest Conference, USDA General Technical Report NE-197.
  • Preece, John E.; Navarrete, Nadia; Van Sambeek, J. W.; and Gaffney, Gerald R. 1991. An in vitro microplant bioassay using clonal white ash to test for tall fescue allelopathy. Plant Cell, Tissue and Organ Culture 27:203?210.
  • Navarrete, Nadia E.; Van Sambeek, J. W.; Preece, John E.; and Gaffney, Gerald R. 1989. Improved micropropagation of white ash (Fraxinus americana L.). pp. 146-149. IN: Proceedings of the Seventh Central Hardwood Forest Conference, USDA Forest Service General Technical Report NC?132.
  • Heile-Sudholt, Catherine; Huetteman, Carl A.; Preece, John E.; Van Sambeek, Jerome W.; and Gaffney, Gerald R. 1986. In vitro embryonic axis and seedling shoot tip culture of Juglans nigra L. Plant Cell, Tissue and Organ Culture 6:189?197.
  • Somers, Peter W.; Van Sambeek, J. W.; Preece, John E.; Gaffney, Gerald; and Myers, Oval, Jr. 1982. In vitro micropropagation of black walnut (Juglans nigra L.). pp. 224-230. IN: Thielges, Bart A., ed., Proceedings, 7th North American Forest Biology Workshop, University of Kentucky Press.
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