Topics: soil water, Salinity, temperature, pH, Radiation, pollution, Benthic region, marine bacteria, Tundra soils, Salt lakes, extreme aquatic environments, Glaciers

Topics: Irrigation, Drainage, Soil-water-plant-atmosphere relationship, Irrigation requirement, Consumptive water use, evapotranspiration, Irrigation scheduling, Irrigation resources, irrigation equipment maintenance, Irrigation systems, Irrigation techniques, soil reaction, soil erosion, soil drainage, Soil salinity, soil alkalinity, soil acidity

Topics: Soil Chemistry, water chemistry, pollution science, soil composition, nitrogen, phosphorus, boron, iron, Manganese, Molybdenum, Ion Exchange Phenomenon, Cation Exchange Capacity, Anion Exchange Capacity, Flocculation, Buffering Capacity, Soil Salinity, Alkalinity, Sodicity, Soil Reaction, Soil Organisms, Fungi, Actinomycetes, bacteria, Algae, Nematodes, Earthworms, Termites, soil organic matter

Topics: Water Quality Management, Pollution Control, water bodies physical composition, water chemistry, Nutrient Cycles, water biological characteristics, sampling methods, Water Quality Standards, water pollution control, Water Quality Monitoring, Nitrification, Denitrification, Anaerobic ammonium oxidation, Nitrogen mineralisation, Carbon Cycle, Phosphorus Cycle, Iron Cycle, Silica Cycle, Marine Dead Zones, bacteria, protozoa, Manual Sampling, grab sampling, Integrated sampling, Automatic Sampling, Mechanical Samplers, Physical Habitat Assessments, Turbidity, salinity, Total oxidised nitrogen, Total organic nitrogen, Total Kjeldahl nitrogen

Topics: Soil Fertility, Soil Productivity, Essential Soil Nutrient Elements, Soil Acidity, soil Basicity, Liming, Liming Materials, Soil Alkalinity, salinity, sodicity, soil fertility evaluation, Soil Fertility maintenance, Soil Fertility Management Practices, crop productivity, irrigation, soil tillage, soil organic matter, crop rotation, Continuous Cropping, animal manure, green manure, cover cropping