Leucaena leucocephala has a great potential in crop and livestock production. However, the plant is difficult to propagate from both seeds and stem cuttings Scarification treatment has the prospective of enhancing seed germination. Chemicals and water have been used for seed scarification. This study evaluated the effectiveness of hot and boiling water in enhancing the germination of Leucaena leucocephala seed. Information on the condition (light or dark) at which Leucaeana seeds germinate better is also provided. The seeds were immersed in hot water and boiling water for 1, 2, 3, and 4 minutes respectively. At twenty-one days after the set-up of the experiment, untreated L. leucocephala seeds had 0 % and 13.3 % germinations under light and dark conditions respectively.; seeds immersed in boiling water for 1- 4 minutes did not germinate irrespective of the condition of germination while all the seeds immersed in hot water for one to three minutes had total (100%) germination; delaying the period of immersing the seeds in hot water to four minutes resulted in significantly less percentage germination than the aforementioned ones immersed in hot water for one to three minutes but had significantly greater germination than the untreated seeds. Dark and light conditions resulted in similar percentage seed germination outcome. Immersing Leucaena leucocephala seeds for one minute is recommended. Planting seeds in dark condition is recommended since continuous light provided no additional germination outcome, in spite of the additional cost of providing continuous light in the growth of seeds under light condition.
B. T. Kang, Sustainable agroforestry system for the tropics: Concepts and examples IITA research guide 26. Training program. Ibadan, Nigeria: International Institute of Tropical Agriculture (IITA), 1993.
A. Getahun and A. Njenga, "Living stakes. Kenyan farmers introduce an agroforestry technology," Agroforestry Today, vol. 2, p. 2, 1990.
C. C. Obiazi, "Sustainable supply of stakes for yam production," Journal of Sustainable Agriculture, vol. 5, pp. 133-138, 1995.
L. Reynolds and A. N. Atta-Krah, "Alley farming with livestock," presented at the Paper Presented at the International Workshop on Alley-Farming for Humid and Sub-humid Regions of Tropical Africa, IITA, Ibadan, Nigeria, 1986.
R. J. Jones, "The value of Leucaena leucocephala in the tropics," World Animal Review, vol. 31, pp. 12-23, 1979.
O. B. Smith and M. F. Van Houtert, "The feeding value of gliricidia - a review," World Animal Review, vol. 62, pp. 57-68, 1988.
L. S. Gill, H. I. Onyibe, and A. E. Evive, "Germination biology of Mimosa pigra (Leguminosae)," Nigerian Journal of Weed Science, vol. 3, pp. 11-18, 1990.
I. O. Akobundu, Weed science in the tropics: Principle and practices. New York: John Wiley and Sons Inc, 1987.
S. A. Miller and M. L. L. Ivey, "Hot water treatment of vegetable seeds to eradicate bacterial plant pathogens in organic production systems. Ohio State University extension’s web site Ohioline," p. 3. Available: http://ohioline.osu.edudownloadedon31/07/2014.3pp. [Accessed 31/07/2014], 2014.
USDA (United States Department of Agriculture), "Hot water treatment of seed. Hot water treatment of seed _ UMass amherst vegetable program.htm," The College of Natural Sciences, p. 1, 2014.