Root architecture of provenances, seedlings and cuttings of Melia volkensii: implications for crop yield in dryland agroforestry
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Melia volkensii (Gürke) is being increasingly promoted as an on-farm tree in Kenya. Researchers' and farmers' views on its competitiveness with crops differ; research station studies have found it to be highly competitive whereas farmers do not consider it to be so. Because of difficulties in seed germination, it is probable that dissemination programmes will rely upon plants produced from root and stem cuttings, rather than on seedlings. This study evaluates differences in root system architecture of plants raised from seed (of four provenances), stem or root cuttings and the relationships between the competitivity index (CI) and crop yield. Cuttings were more shallowly rooting than seedlings, and had higher competitivity indices, and there was a negative relationship between CI and crop yield. No differences in root architecture between provenances were found. Therefore, to reduce tree-crop competition, the use of seedlings rather than cuttings should be recommended when promoting the use of this species on dryland farms. If cuttings are used to circumvent the problems of seed germination, alternative methods of controlling competition, such as root pruning, need to be considered.
- Bell D.T., Van der Moezel P.G., Bennett I.J., McComb J.A., Wilkins C.F., Marshall S.C.B. et al. 1993. Comparisons of growth of Eucalyptus camaldulensis from seeds, tissue culture: root, shoot and leaf morphology of nine-month-old plants grown in deep sand and sand over clay. Forest Ecology and Management 57: 125-139.
- Brutsch M.O., Allan P. and Wolstenholme B.N. 1977. The anatomy of adventitious root formation in adult-phase pecan (Carya illinoensis Wang.) stem cuttings. Horticultural Research 17 (1): 23-31.
- Carron M.P. and Enjarlic F. 1983. Perspectives du microbouturage de l'Hevea brasiliensis. Review Generale des Caoutchoucs et Plastiques (627-628): 65-68.
- Halter M.R. and Chanway C.P. 1993. Growth and root morphology of planted and naturally regenerated Douglas fir (Pseudotsuga menziesii) and Lodgepole pine (Pinus contorta). Annales des Sciences Forestieres 50: 71-77.
- Jackson N.A. and Wallace J.S. 1999. Soil evaporation measurements in an agroforestry system in Kenya. Agricultural and Forest Meteorology 94: 203-215.
- Kenya Soil Survey 1980. Exploratory Soil Map and Agroclimatic Zone Map of Kenya 1980.
- Khurana D.K., Narkhede S. and Parkash N. 1997. Rooting behaviour and growth performance of new poplar clones under agroforestry. Book of abstracts. In: International Workshop on Agroforestry for Sustainable Land-use. Institute National de la Recherche Agronomique, Montpellier, France, pp. 311-314.
- Kidundo M. 1997. Participatory technology development and nursery propagation of Melia volkensii Gürke: a potential agroforestry tree species for semi-arid Kenya. MPhil, University of Wales, Bangor, UK.
- Leakey R.R.B., Mesén J.F., Tchoundjeu Z., Longman K.A., Dick J.M.cP., Newton A. et al. 1990. Low-technology techniques for the vegetative propagation of tropical trees. Commonwealth Forestry Review 69(3): 247-257.
- Mulatya J.M. 2000. Tree root development and interactions in drylands: focusing on Melia volkensii with socio-economic evaluation. PhD Dissertation, University of Dundee, Dundee, UK.
- Milimo P.B. 1989. Preliminary studies on vegetative propagation of Melia volkensii by cuttings. In: Wolk J.N. (ed.), Trees for development in Sub-Saharan Africa. Proceedings of a regional seminar held by the International Foundation for Science. ICRAF, Nairobi, Kenya, pp. 298-301.
- Odhiambo H.O., Ong C.K., Wilson J., Deans J.D., Broadhead J. and Black C. 1999. Tree-crop interactions for below-ground resources in drylands: root structure and function. Annals of Arid Zone 38(3): 221-237.
- Odhiambo H.O., Ong C.K., Deans J.D., Wilson J., Khan A.A.H. and Sprent J.I. 2001. Roots, soil water and crop yield: tree crop interactions in a semi-arid agroforestry system in Kenya. Plant and Soil 235: 221-233.
- Ong C.K., Black C.R., Marshall F.M. and Corlett J.E. 1996. Principles of resource capture and utilization of light and water. In: Ong C.K. and Huxley P. (eds), Tree-crop Interactions. A Physiological Approach. CAB International, Wallingford, UK, pp. 73-158.
- Ong C.K., Deans J.D., Wilson J., Mutua J., Khan A.A.H. and Lawson E/.M. 1999. Exploring below ground complementarity in agroforestry using sap flow and root fractal techniques. Agroforestry Systems 44: 87-103.
- Riedacker A. and Belgrand M. 1983. Morphogenesis of root systems of seedlings and cuttings of Quercus robur L. Plant and Soil 71: 131-146.
- Roothaert R.L. and Franzel S. 2001. Farmers' preferences and use of local fodder trees and shrubs in Kenya. Agroforestry Systems 52: 239-252.
- Sasse J. and Sands R. 1997. Configuration and development of root systems of cuttings and seedlings of Eucalyptus globulus. New Forests 14: 85-105.
- Stewart M. and Blomley T. 1994. Use of Melia volkensii in a semi-arid agroforestry system in Kenya. Commonwealth Forestry Review 73(2): 128-131.
- Tedd J. 1997. Perception, management and usage of Melia volkensii by farmers. A case study from the Kibwezi district, Kenya. MSc Dissertation, University of Nottingham, Nottingham, UK.
- Van Noordwijk M. and Purnomosidhi P. 1995. Root architecture in relation to tree-crop interactions and shoot pruning in agroforestry. Agroforestry Systems 30: 161-173.
- Van Noordwijk M., Lawson G., Soumare A., Groot J.J.R. and Hairiah A. 1996. Root distribution of trees and crops: Competition and/or complementarity. In: Ong C.K. and Huxley P. (eds), Tree-crop Interactions. CAB International, allingford, UK, pp. 319-364.
- Root architecture of provenances, seedlings and cuttings of Melia volkensii: implications for crop yield in dryland agroforestry
Volume 56, Issue 1 , pp 65-72
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- Kluwer Academic Publishers
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- Author Affiliations
- 1. Kenya Forestry Research Institute, Nairobi, Kenya
- 2. Centre for Ecology and Hydrology, Bush Estate, Penicuik, EH26 0QB, Edinburgh, Scotland, UK
- 3. International Centre for Research in Agroforestry, United Nations Avenue, P.O. Box 30677, Nairobi, Kenya
- 4. University of Dundee, Millers' Wynd, DD1 4HN, Dundee, Scotland, UK