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Vertisols, one of the eleven established soil orders, are clay soils with unusual and interesting properties. They cover more than 350 million hectares of land in the world and in tropical Africa alone there are over 100 million hectares. Because of their very small particle size and high surface area, these soils have higher physical and chemical reactivity than other soils. Their interaction with agrochemicals/industrial wastes, has been, increasingly, the subject of research especially in the last two decades. Vertisols create special problems when used for engineering purposes. This book
Vertisols --- soil genesis --- classification. --- classification --- soil chemicophysical properties --- soil morphological features --- Soil water regimes --- Water resources --- resource management --- Erosion. --- Erosion --- Oryza --- Upland rice --- Wetland rice --- Cultivation --- Geographical distribution --- Tropical zones --- Cold zones --- USA --- India --- Australia --- Africa --- Caribbean --- Vertisols. --- Soil management. --- Soils --- Soil science --- Agronomy --- Shrink-swell soils --- Swell-shrink soils --- Management
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Vertisol --- Vertisols --- Climatologie --- Climatology --- Irrigation --- Eau du sol --- Soil water --- Sol argileux --- Clay soils --- Labour --- Ploughing --- Système de culture --- cropping systems --- Agriculture traditionnelle --- Traditional farming --- Drainage --- drainage --- ILCA --- Afrique au sud du Sahara --- Africa South of Sahara --- Ethiopia --- 631.445.723 --- 631.11 <66/67> --- -Soil management --- -Soils --- Soil science --- Agronomy --- Shrink-swell soils --- Swell-shrink soils --- Soils --- Grumusol. Black friable soils. Vertisols --- Farms, farm properties and farming systems--States and territories south of the Sahara. Sub-Saharan Africa --- Congresses --- Management --- Conferences - Meetings --- -Grumusol. Black friable soils. Vertisols --- 631.445.723 Grumusol. Black friable soils. Vertisols --- -631.445.723 Grumusol. Black friable soils. Vertisols --- Soil management --- drainage. --- 1988
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