Topics: Agricultural Engineering, Agricultural Engineering Education, Workshop tools, Internal Combustion Engine, Engine Operation, tillage, Primary Tillage Equipment, Secondary Tillage Equipment

Topics: Soil Conservation, Water Conservation, erosion, Soil Erosion and Civilization, Geologic Erosion, Sedimentation, Landscape Development, rock types, Sedimentary Landforms, Mass Movement Deposits, Glacial Landscapes, Water Erosion, erosion damage, Vegetation, Soil Properties, Soil Erodibility, pollution, Water-Erosion Control, Wind Erosion, wind erosion process, Windbreaks, Shelterbelts, Wind-Erosion Control, Predicting Soil Loss, Tolerable Soil Loss, Universal Soil Loss Equation, Computer-Based Soil Loss Prediction Models, Wind-Erosion Prediction Equation, Wind Erosion Prediction System, Soil Map Unit Interpretations, soil survey, Land Use Planning, managing land, cropping systems, Managing Monocultures, crop rotations, Multiple Cropping, Evaluating Cropping Systems, strip cropping, tillage, Conservation Tillage, deep tillage, Contour Cultivation, Emergency Wind-Erosion Control, Gully-Control Structures, road ditches, culverts, Earthen Dams, Streambank Protection, flood control, Wind Erosion-Control Structures, Pastureland Management, Rangeland Management, Forestland Management, water cycle, drought, Soil Drainage, wetlands, Irrigation, Irrigation Methods, Land Reclamation, Conservation Irrigation, soil pollution, pollutants, industrial wastes, agricultural wastes, aerosols, polluted soil, Hazardous Sites, Soil Remediation, Water Quality, water Pollution, Water acidification, Farm Service Agency

Topics: Crop Production development, Cropping Systems, Fertilisers, Tillage Practices, seeds, seedlings, soil conservation, water conservation, irrigation, drainage, weeds, Weeds Control, pests, disease, crop improvement, harvesting, field crops storage, Shifting Cultivation, Continuous Cropping, Crop Rotation, Monoculture, Intercropping, Chemical Fertilisers

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: Soil management, Water Management, Soil Conservation Techniques, Water Conservation Techniques, Soil Tillage System, soil erosion, Soil Erodility, soil Erosivity

Topics: Pasture, pasture establishment, pasture utilization, forage yield determination, forage conservation, pasture nutritive value, grass morphology, legumes, shrubs, Nigerian vegetation zone, rainforest, guinea savanna, Sudan Savanna, Mangrove zone, plant introduction, Soil fertility, Seedbed Preparation, conventional tillage, no-till seedbed, seeding rate, weed control, forest grazing

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

Topics: Soil Science, silicate chemistry, soil form rocks, minerals, soil composition, soil porosity, soil texture, soil density, soil water relationships, Evapo-Transpiration, tillage, soil properties, Soil Micro-Organisms, Shifting Cultivation, Fallow System