Abstract
Summary Exploratory and reconnaissance soil surveys are of maximum value in undeveloped terrain or rangeland. The resulting regional appraisal of land capability can be used to select areas for closer study. Detailed soil surveys are carried out to help individual users of agricultural land to plan their farming operations so that yields and profits are the highest obtainable without incurring soil erosion or deterioration. In Swaziland, soil series mapped at scales between I : 50,000 and I: 3,600 are given crop ratings in respect of important local cropping systems. As topography is the chief variable factor within series, land capability classes are arrived at by combining cartographically the crop ratings with slope categories. Farmers, rural extension staff, agricultural research workers and land use planners are all served directly by this kind of soil survey.
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