Planting Trees in Fresh-Water Swamps

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Fresh-water swamp planting is usually undertaken as an anti-malarial measure in townships, or as a means of supplying fuel and poles to densely populated districts. Owing to the high costs of establishment all aspects need careful consideration. In the closely farmed parts of ,the Eastern Province of Uganda it has been found politic to plant up swamps in areas remote from forest reserves, as such planting results in the least disturbance in ,the economic life of the surrounding inhabitants. These plantations supply large-sized poles for African house-building, and fuel to such consumers as cotton ginneries, brickyards and schools, which otherwise clear the already sparse natural bush. In townships it is now realized that in spite of possible small-scale breeding of mosquito larvie and the shelter given by the trees to some adult mosquitoes, tree plantations are cheaper, and in many cases more efficient, than drainage systems in keeping mosquitoes in check. Efficient drainage systems have usually .to be complex and the drains cemented. It is not the high initial costs which have proved disheartening to the health authorities: it is the heavy annual expenditure on upkeep, coupled in some areas (more especially those with a clayey soil) with their inability to remove ,the water quickly enough.
East African Agricultural And Forestry Journal, 9 (IX), p. 23-24