University of Khartoum

Sandy Soils: Extent, Distribution and Management for Sustainable Use

Sandy Soils: Extent, Distribution and Management for Sustainable Use

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Title: Sandy Soils: Extent, Distribution and Management for Sustainable Use
Author: Ibrahim, Ibrahim S.; Abdalla, Mubarak Abdelrahman; Hussein, Salaheldin Goda
Abstract: In subsistence agriculture the wealth of people on low fertility sandy soils is much lower than those living on rich volcanic soils. The aim of this paper is to give highlights on extent, distribution and sustainable management of tropical sandy soils. Sandy soils occur in hyper arid, arid, semi-arid and humid rainfall zones of the tropics and have a wide range of limiting factors for agricultural use. The environments in which they occur are prone to degradation risks from nutrient decline, erosion, leaching, salinity, and acidification. Sandy soils cover about 60% of the cultivable area and restricted to the States of North Darfur, North Kordofan, Northern State, River Nile, White Nile, Red Sea and northern Gezira State. Additionally, pockets of sandy soils are found in Khors and Wadies. Current uses of sandy soils are: the gum Arabic belt, rain fed production of a wide range of cereals, legumes, vegetables and agroforestry. Development of sustainable agro-ecosystems in these soils should concentrate on optimisation of key ecosystems processes such as nutrients recycling, restoring hydrological balance; enhancing biodiversity and strengthening soil resilience. These can be achieved through adoption of afforestation, agroforestry, soil amendments, maintenance of soil organic matter, balanced fertilization, strategic irrigation, and breeding species for adaption to the constraints present.
URI: http://khartoumspace.uofk.edu/123456789/27835


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