Problems and potentials of Vartisols and Alfisols - the two important soils of SAT [semi arid tropics] - ICRISAT [International Crop Research Institute for the Semi-Arid Tropics] International symposium on distribution, characteristics and utilization of problem soils

africa africa de habla francesa africa south of sahara afrique afrique au sud du sahara afrique francophone afrique occidentale asia asie chemicophysical properties clima climat climate climatic zones condiciones ambientales condition de milieu environment environmental conditions environnement estructura del suelo francophone africa genetic soil types inde india institution de recherche international organizations manejo del suelo medio ambiente mise en valeur du sol niger organisation internationale organizaciones internacionales podzol podzoles podzols recherche research research institutions site factors soil management soil morphological features soil physicochemical properties soil structure soil types soil zonation structure du sol trait morphologique du sol tropics tropiques type de sol vertisol vertisoles vertisols west africa zone climatique zone semi-aride