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close this bookObstacles to Tree Planting in Arid and Semi-Arid lands: Comparative Case Studies from India and Kenya (UNU, 1982, 63 p.)
close this folder4. India and Kenya: Comparisons and contrasts
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View the documentEnvironmental and technical factors
View the documentInstitutional factors
View the documentSocial and economic factors

Environmental and technical factors

Within the ASAL as defined in this report there are large differences in climatic and edaphic factors, but, common to both India and Kenya, these are not the factors limiting tree planting. Drought-hardy and salt-tolerant species exist that can be planted profitably and yield a range of end products; however, for both countries there is an urgent need for detailed research on the variation in populations within species, and they should both participate to the fullest extent possible in the international, co-operative project for the exploration, conservation, evaluation, and utilization of arid zone trees (organized by FAO). In view of their potentially fast growth rate and early sexual maturity, consideration should be given now to planning tree-improvement programmes with selected species.

Methods are known for raising many species in the nursery and establishing them in the field, but this information is far better known in India than in Kenya. The costs of raising plantations vary within each country and are not well known in Kenya, but even in India there is need for continual research into methods of reducing costs and continual monitoring to ensure they remain low.

Thus basically environmental and technical constraints can be overcome with existing knowledge; the major limits to tree planting in the ASAL are social, economic, and institutional constraints.