This work is licensed under a
Creative Commons Attribution 4.0 International License
Coomes, D. A. and Grubb, P. J. 2003. Colonization, tolerance, competition and seed size variation within functional groups. Trends in Ecology and Evolution 18: 283-291.
Dogbevi , E. K. 2007. Ghana and the shea tree. Website.
http: /www. myjoyonline. com/features/200712/10987. asp. Accessed 13/2/(2010).
Douglass, L. L., Possingham, H. P., Carwadine, J., Klein, C. J., Roxburgh, S. H., RusselSmith, J. and Wilson, K. A. 2011. The effects of carbon credit on savanna land management and priorities for biodiversity conservation. PLoS ONE 6(9): e23843. Doi10, 1371/journal. pone. 0023843.
GENSTAT, 2007. GENSTAT Discovery Edition 3, Release 7. 2DE. Lawes Agricultural Trust, Rothamstead Experimental Station, UK.
Gupta, S. K., Pathak, P. S. and Roy, R. D. 1983. Seedling growth of Leucaena leucocephala(Lam. ) de Wit. II. Effect of seed size. Indian Journal of Forestry 6: 202-204.
Harris, D. R. 1980. Human Ecology in Savanna Environments. Academic Press, London.
ICRAF. 2000. International Centre for Research in Agroforestry. Agroforestree Database2000.
Ker, A. 1999. Farming Systems of the African Savanna: A Continent in Crisis. IDRC, 176pp.
Khurana, E. and Singh, J. S. 2000. Influence of seed size on seedling growth of Albizia procera under different soil water levels. Annals of Botany 86: 1185-1192.
Leishman, M. R. and Westoby, M. 1994. The role of seed size in seedling establishment in dry soil conditions - experimental evidence from semiarid species. Journal of Ecology 82: 249-258.
Okigbo, B. N. 1985. Land use and production potentials of African savanna. In.
Tothill, J. C., Mott, J. J. (Ed) Ecology and Management of the World's Savannas. Australian Academy of Science, Canberra, Australia.
Phillips, J. 1959. Agriculture and Ecology in Africa: A Study of Actual and Potential.
development South of the Sahara. Faber and Faber, London, UK. 424pp.
Sack, L., Grubb, P. J. and Marańón, T. 2003. The functional morphology of juvenile plants tolerant of strong summer drought in shaded forest understories in southern Spain. Plant Ecology 168: 139-163.
Sánchez-Gómez, D., Valladares, S. and Zavala, M. S. 2006. Performance of seedlings of Mediterranean woody species under experimental gradients of irradiance and water.
availability: trade-offs and evidence for niche differentiation. New Phtologist 170: 795-806.
Seiwa, K. and Kikuzawa, K. 1991. Phenology of tree seedlings in relation to seed size. Canadian Journal of Botany 69: 532-538.
Ugese, F. D., Ahen, A. and Ishar, S. I. 2011b. Single defoliation had little influence on growth and dry matter attributes of shea (Vitellaria paradoxa Gaertn F. ) seedlings. Forests, Trees and Livelihoods 20: 283-294.
Ugese, F. D., Baiyeri, K. P. and Mbah, B. N. 2008a. Leaf area determination of shea butter tree (Vitellaria Paradoxa C. F. Gaertn. ). Int. Agrophysics, 22: 167-170.
Ugese, F. D., Baiyeri, K. P. and Mbah, B. N. 2008b. Effect of seed origin and watering regime on seedling growth and dry matter yield of shea butter tree (Vitellaria paradoxa Gaertn F. ) seedlings. Bioresearch 6: 303 - 307.
Ugese, F. D., Baiyeri, K. P. and Mbah, B. N. 2010. Determination of growth stages and seedling structures associated with slow emergence of shea butter tree (Vitellaria paradoxa C. F. Gaertn. ) seedlings. Journal of Animal and Plant Sciences 8: 993-998.
Ugese, F. D., Baiyeri, K. P. and Mbah, B. N. 2011a. Variability in seedling growth of seeds of shea butter tree (Vitellaria paradoxa C. F. Gaertn. ) sourced from nine locations in.
Nigeria. Tree and Forestry Science and Biotechnology 5(Special.
Ugese, F. D., Ojo A. A. and Adedzwa, D. K. 2007. Effect of sowing depth and seed size on emergence and seedling growth of seeds of shea butter tree (Vitellaria paradoxa). Nigerian Journal of Botany 20: 93-102.
Zainudin, S. R., Awang, K. and Hanif, A. H. M. 2003. Effects of combined nutrient and water stress on the growth of Hopea odorata Roxb. and Mimusops elengi Linn. seedlings. Journal of Arboriculture 29: 79-83.