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: Toxicology, Cell Culture Techniques, cell structure, molecular techniques, molecular cloning, genomic libraries, gene expression, immunochemical techniques, proteomics, metabolomics, bioinformatics, toxicants, air pollutants, water pollutants, soil pollutant, Occupational Toxicants, metals, Agricultural Chemicals, pesticides, Organophosphorus Insecticides, Carbamate Insecticides, Botanical Insecticides, Pyrethroid Insecticides, Herbicides, Fungicides, Rodenticides, Food Additives, food Contaminants, toxins, Microbial Toxins, Mycotoxins, Algal Toxins, Plant Toxins, drug abuse, cell membranes, toxicant processing, Toxicant Distribution, Gastrointestinal Absorption, Dermal Absorption, Respiratory Penetration, Toxicant Distribution, Endoplasmic Reticulum, Microsomes, Monooxygenations, Nonmicrosomal Oxidations, Epoxide Hydration, DDT Dehydrochlorinase, Glucuronide Conjugation, Glucoside Conjugation, Phosphate Conjugation, Reactive Metabolites, Activation Enzymes, Reactive Oxygen Species, Piperonyl Butoxide, toxic action, acute toxicity, Chemical Carcinogenesis, Mutagenesis, DNA damage, mutagenesis, Human cancer, Teratogenesis, Embryonic Development, organ toxicity, Hepatotoxicity, Nephrotoxicity, Neurotoxicity Testing, nervous system, Reproductive System, Hypothalamic-Pituitary-Gonadal Axis, Male Reproductive Physiology, Female Reproductive Physiology, Endocrine Toxicology, endocrine disruption, Respiratory Toxicology, Occupational Lung Diseases, Environmental Lung Diseases, Immune System, Immune Suppression, Immune-Mediated Injury, Hypersensitivity, applied toxicology, toxicity testing, Forensic Toxicology, Clinical Toxicology, Human Health Risk Assessment, environmental toxicology, Environmental Sample Collection Methods, Analytical Techniques, Bioaccumulation, Environmental Risk Assessment, Molecular Toxicology, Biochemical Toxicology

Topics: Plant biology, biotechnology, Microbial Biotechnology, Agricultural Biotechnology, Animal Biotechnology, Forensic Biotechnology, Environmental Biotechnology, Regulatory Biotechnology, plant cell, biodiversity

Topics: plants, trachophytes, vascular, wort, fungi, lower plant, higher plant, biotechnology, crop production, animal production, agricultural microbiology, biological interactions, bio degradation

Topics: kingdoms, class, phylum, taxonomy, cryptograms, agricultural microbiology, genetic engineering, higher plants, biotechnology, lower plants, plant biology, morphology of organisms, anatomy of organisms

Topics: comparative Economic Development, Poverty, Inequality, Development, Absolute Poverty, Population Growth, Urbanization.Rural-Urban Migration, human capital, Agricultural Transformation, Rural Development, Development Policymaking, International Trade Theory, Development Strategy, Balance of Payments, Debt, Financial Crises, Stabilization Policies, Foreign Finance, Investment, fiscal policy

Topics: Foreign Aids, Agricultural Development, Education, Development, Population, technology

Topics: Man-Environment Interaction, Spatial Organization, Spatial Pattern, Spatial Process, Man's Spatial Behaviour, culture, population, rural settlements, agricultural land use, rural market system, urban settlements, industrial activities, transportation systems, spatial diffusion

Topics: African Civilisation, Africa, stone age, Neolithic age, Neolithic Revolution, Food Production Revolution, Agricultural Revolution, food production, Bantu expansion, Egypt, Sudan, Ethiopia, Swahili Civilisation, Great Zimbabwe, Monomotapa Empire, Monomotapa kingdom, South Africa, West Africa, Nigeria

Topics: Probability, distributions, Estimation, hypothesis testing, random variation, randomized block design, Latin square designs, factorial treatment structure, Linear regression, Variance homogeneity, linear relationships, Linear models, non-Linear models, analysis of proportions, experimental measurements, experimental measurements analysis, Sampling finite populations, Experimental Biology, Agricultural Statistical Methods