WATER CONSERVATION SOIL FERTILITY 3 ACID SOILS 2 CLAY MINERALS 2 FARMING SYSTEM 2 FERTILIZERS 2 GREEN REVOLUTION 2 NUTRIENT MANAGEMENT 2 PHYSICAL PROPERTIES 2 SOIL FORMATION 2 SUSTAINABLE AGRICULTURE 2 AGRICULTURAL CLIMATE-INDIA 1 AGROMETEOROLOGY 1 BIOFERTILIZERS 1 BIOREMIDATION 1 CROPPING SYSTEMS 1 DRAINAGE WATER REUSE 1 DROUGHT&FLOOD 1 DRYLAND FARMING 1 ENVIRONMENT 1 EUTROPHICATION 1 FARMWORK TO SELECTING 1 FLUORIDE IN WATER 1 INSECT PEST MANAGEMENT 1 INTEGRATED NUTRIENT MANAGEMENT 1 MICROBIAL BIOPESTICIDES 1 MINERAL NUTRITION 1 NATURAL RESOURCES 1 PROBLEMS OF AGRICULTURE IN THE SEMI -ARID REGIONS 1 SEWAGE TREATMENT 1