Soil development Soil chemistry 7 Agroforestry 1 Atkali 1 Biofertilizers 1 Cropping systems 1 Drainage and irrigation 1 Erosion 1 Fertilizers 1 Life in the Soil 1 Minerals 1 Organic amendments 1 Saline 1 Social forestry 1 Soil conservation 1 Soil dry land agriculture 1 Soil fertility 1 Soil formation 1 Soil orogin & development 1 Soil sampling 1 Soil testing 1 Soil- Chemistry 1 Tillage and cropping systems 1 Water shed management 1 aridzones 1 climatic problems 1 human activity-semiarid enviornment 1 soil chemistry 1 soil colloids 1 soil water 1