Topics: soil properties, soil management, tropical environment, temperature, solar radiation, rainfall, tropical climates, vegetation, physiography, Anthropocene, biodiversity, climate change, demographics, Green Revolutions, Tropical Agroecosystems, land use, land-use change, Pedology, Physics, Chemistry, Biology, Laterite Paradigm, tropical soils, tropical soil research, Soil Taxonomy, soil classification systems, soil physical properties, soil temperature, soil structure, soil compaction, soil water, soil erosion, conservation, conservation agriculture, water, rainfed agriculture, irrigated agriculture, irrigation, mineralogy, clay minerals, mineralogy families, Anion Exchange Capacity, soil acidity capacity, Acid Soil Infertility, Liming, overliming, subsoil acidity, secondary acidity, soil biology, soil biodiversity, comminution, decomposition, nutrient elements transformation, soil structure regulation, organic carbon, carbon pools, carbon fractions, animal manures, composts, biochars, organic farming, soil fertility, nutrient cycling, nutrient uptake, determining fertilizer needs, nitrogen cycle, nitrogen pools, atmospheric deposition, biological nitrogen fixation, mineral fertilizers, organic nitrogen mineralization, soil nitrogen fertilizer reactions, Phosphorus Cycle, Phosphorus, Total Soil Phosphorus, inorganic Phosphorus, Phosphorus sorption, Phosphorus release, plant Phosphorus requirements, Phosphorus fertilization, sulfur cycle, sulfur sorption, Sulphur fertilization, Forest–Soil Nutrient Cycles, land clearing, Mechanized Land Clearing, Crop Yield Declines, Field Abandonment, Secondary Forest Fallows, puddling, flooding, rice cultivation systems, Nutrient Management, Yield Stagnation, Nitrogen Sequestration, Livestock-Based Tropical Systems, tropical pastures, Tropical Livestock Management Systems, pastoralism, Smallholder Mixed Crop–Livestock Systems, Extensive Pasture-Based Beef Production, Pasture Degradation, Crop–Pasture Integration, Tropical Tree-Based Systems, Plantation Forestry, Plantation Forestry Species, Agroforestry, Agroforestry Tree Species, Agroforestry Systems, Simultaneous Agroforestry, Sequential Agroforestry, tree crops

Topics: Calcium, Phosphorus, Calcium absorption, Calcium level, Alkalosis and acidosis, Calcitonin, Parathyroid, Hormone Vitamin D, calcitriol

Topics: body calcium requirements, functions of calcium, control of calcium, control pf phosphorus calcium, parathyroid hormone, VItamin D, Adjusted Calcium, Calcium Homeostasis

Topics: Soil Fertility, Fertilizers, global population growth, food consumption, food production, agricultural land use, crop yields, nutrient use, Crop Yield Limiting Factors, buffering capacity, mineral solubility, soil acidity, soil alkalinity, Soil pH Buffering, Reducing Soil Acidity Effects, Calcareous Soils, Saline Soils, Sodic Soils, Saline-Sodic Soils, nitrogen, Biological Fixation, Phosphorus, Phosphorus cycle, soil Phosphorus forms, Phosphorus sources, Potassium cycle, soil Potassium forms, Potassium sources, Sulfur, Calcium, Magnesium, Micronutrients, iron, zinc, coper, Manganese, Boron, chloride, Molybdenum, Nickel, Beneficial Elements, soil fertility evaluation, plant nutrient-deficiency symptoms, plant analysis, greenhouse tests, soil testing, nutrient management, soil characteristics, nutrient placement, Nutrient Interactions, nutrient Economics, Agricultural Productivity, Environmental Quality

Topics: Fertilizer technology, fertilizer consumption, Nitrogen fertilizer composition, phosphorus fertilizer composition, potassium fertilizer composition, micronutrient fertilizer composition, Fertilizer calculations content, fertilizer application content, Phosphorus fertilizer production, Potassium fertilizer production, Fertilizer Specifications, Complete Fertilizers, Straight Fertilizer, Compound Fertilizer, Fertilizer Ratio

Topics: Soil, rock weathering, soil formation, soil profile, soil classification, soil taxonomy, entisols, inceptisols, andisols, gelisols, histosols, Soil Architecture, soil color, soil texture, soil textural classes, mineral soils structure, tillage, soil density, soil water, soil water energy, soil water content, soil water potential, infiltration, percolation, water vapor movement, hydrologic cycle, soil-plant-atmosphere continuum, enhancing soil drainage, septic tank drain fields, soil aeration, redox potential, wetlands, soil temperature control, soil colloids, layer silicate clay structure, cation exchange capacity, soil acidity, soil ecology, soil organism, earthworms, ants, termites, soil algae, soil fungi, soil prokaryotes, soil organic, soil organic matter management, climate change, soil phosphorus, sulfur oxidation, sulfur retention, soil fertility maintenance, phosphorus cycle, ammonia volatilization, ammonia fixation, sulfur cycle, calcium, magnesium, silicon, trace elements, Practical Nutrient Management, chemical pollution, Geographic Soils Information

Topics: micro mineral, macro minerals, toxic minerals, Sodium, potassium, Hyperkalaemia, Magnesium, Phosphorus, PHOSPHORYLATION, CELL SIGNALLING, calcium, OSTEOPOROSIS, RICKETS, OSTEOMALACIA, Vitamin A, Zinc Metabolism, Selenium, copper, chromium, ANTIOXIDANTS:

Topics: Microbial Ecology, microfossils, microorganism diversity, Archaeal Diversity, Fungal Diversity, protist diversity, Algal Diversity, Viral Diversity, cell physiology, metabolism, cell movement, chemotaxis, Bioelectrochemical Activities, energetics, Heterotrophs, Chemolithotrophs, Photophosphorylation, Bacteriorhodopsin Reaction, microbial habitat, Aquatic Habitats, Soil Habitats, microscopy, Molecular Phylogenetics, Metagenomics, Environmental Proteomics, Microbial Interactions, Symbiotic Associations, Mycorrhizae, Nitrogen-Fixing Bacteria, Parasitism, mutalism, microbial communities, biomats, biofilms, Species Diversity, food webs, Primary Production, Energy Flow, Nitrogen Cycling, Sulfur Cycling, Phosphorus Cycling, Iron Cycling, bioremediation, genetic engineering, Xenobiotics degradation

Topics: Nutrition, proteins, amino acids, carbohydrates, lipids, sterols, energy needs, electrolytes, minerals, water, acid-base balance, calcium, phosphorus, magnesium, zinc, copper, iodine, selenium, ultrace minerals, vitamins, riboflavin, niacin, Pantothenic Acid, folic acid, cobalamin, biotin, Carnitine, Choline, Phosphatidylcholine, Carotenoids, Homocysteine, Cysteine, Taurine, Glutamine, Arginine, Transmembrane Signaling, Hormone, Cytokine, Nutrient Interactions, immune system, oxidative stress, oxidant defense, body composition, maternal nutrition, Diet, Adolescence, Dietary Assessment, Pediatric disorders, Adolescent Disorders, Protein-Energy Malnutrition, Inherited Metabolic Disease, Childhood Obesity, Malabsorption assessment, Esophagus, Stomach, Short Bowel Syndrome, Inflammatory Bowel Disease, small bowel disease, celiac disease, Lipoprotein Metabolism, Cardiovascular Disorders, Hyperlipidemia, Atherosclerosis, hypertension, Chronic Congestive Heart Failure, cancer, Osteoporosis, Rheumatic Diseases, bone biology, Hematologic Disorders, Renal Disorders, Retinal Degenerations, respiratory function, Psychiatric Disorders, Behavioral Disorders, Neurologic Disorders, Anorexia Nervosa, Bulimia Nervosa, Hypercatabolic State, infection, trauma, sepsis, Enteral Feeding, Parenteral Nutrition, Nutrition Monitoring, Recommended Dietary Intakes, Alternative Nutrition Therapies, food processing, Food Additives, food Contaminants, Natural Toxins, Food Labeling, Health Claims, Dietary Supplement Legislation

Topics: Botany, Ecology, ecological concepts, Ecosystem, Autotrophs, Heterotrophs, Phagotrophs, Osmotrophs, Energy Flow, Food Chain, Food Web, Biogeochemical Cycle, Water Cycle, hydrologic cycle, Carbon cycle, Atmospheric Carbon Cycle, Terrestrial biological carbon cycle, Oceanic carbon cycle, Nitrogen cycle, Nitrogen fixation, Nitrogen Assimilation, Ammonification, Nitrification, Denitrification, Marine nitrogen cycle, Oxygen cycle, Phosphorus cycle, Phosphorous, Sulfur cycle, sulfur, Competition, Mutualism, Predation, Parasitism, Commensalism, Ammensalism, niche, succession, biomes