Soil formation, physical & chemical properties, soil classification, fertility and productivity, macro & micro nutrients, manures and fertilizers, reclamation of problem soils
Keywords: soil science notes, soil fertility, fertilizers, manures, soil classification, problem soils
Complete guide to organic manures — FYM, compost, vermicompost, green manures, and concentrated organic manures like oilcakes and bone meal. Covers nutrient content, preparation methods, and exam-focused comparisons.
Complete guide to 17 essential plant nutrients — classification, uptake forms, mobility, deficiency symptoms, nutrient interactions, and indicator plants for competitive exams
Understanding soil as a natural resource -- its definition, composition, branches of soil science, and the relationship between earth's interior and soil formation
Physical properties (texture, structure, bulk density, porosity), chemical properties (pH, CEC, organic matter, soil reaction), soil water constants (field capacity, PWP), soil colour and horizon development.
Complete guide to biofertilizers — Rhizobium, Azotobacter, Azospirillum, BGA, Azolla, PSB, mycorrhizae, and PGPR. Covers nitrogen fixation mechanisms, application rates, and exam-focused comparisons.
Complete guide to soil testing procedures, fertility grouping, soil sampling techniques, chemical extractants, and long-term fertilizer experiments for competitive exams
Essential plant nutrients, deficiency and toxicity symptoms, NPK fertilizers, secondary and micronutrient management, soil testing and fertilizer recommendations, integrated nutrient management practices.
Classification of rocks (igneous, sedimentary, metamorphic), primary and secondary minerals, silicate structures, and physical properties of minerals
Complete guide to nitrogen fertilizers — nitrate, ammoniacal, amide forms, urea, CAN, neem-coated urea, nitrification inhibitors, and slow-release fertilizers. Covers N content, equivalent acidity, and exam-focused comparisons.
Soil amendments — organic matter, lime, gypsum, compost, vermicompost, biofertilizers, green manure crops, micronutrient correctives. Integrated nutrient management for sustainable and productive agriculture.
Complete guide to soil fertility evaluation methods — STCR, DRIS, crop response data, biological tests, plant analysis, and Land Capability Classification for competitive exams
Physical, chemical and biological weathering processes that transform rocks into parent material for soil formation
Complete guide to phosphate fertilizers — SSP, DSP, TSP, DAP, MAP, rock phosphate, bone meal, and Bio-super. Covers solubility classification, P2O5 content, conversion factors, and exam-focused comparisons.
Complete guide to nitrogen — soil forms, transformations, N cycle, biological fixation, losses, functions, deficiency and toxicity symptoms for competitive exams
Five soil forming factors (CLiORP/Jenny's equation), passive and active factors, and 14 soil forming processes from humification to pedoturbation
Complete guide to potassium fertilizers — Muriate of Potash (KCl), Sulphate of Potash (K2SO4), Potassium Nitrate (KNO3). Covers K2O content, chloride sensitivity, soil suitability, K-fixation, and exam-focused comparisons.
Complete guide to phosphorus — soil forms, fixation in acid and alkaline soils, P cycle, functions as 'Key to Life', deficiency and toxicity symptoms for competitive exams
Master horizons (O, A, E, B, C, R), transitional horizons, pedon, polypedon, and diagnostic features of each soil layer
Answer-first guide to fertilizer classification: straight, binary, complete, complex and mixed fertilizers, NPK grade and ratio, mixing precautions, acidity/basicity and Indian fertilizer industry facts for agriculture exams
Complete guide to potassium — soil forms, fixation, luxury consumption, functions as 'Quality Element', deficiency and toxicity symptoms for competitive exams
Soil separates, classification systems (USDA, ISSS), Stokes' Law, textural triangle, 12 textural classes and their agricultural importance
Classification, diagnosis, reclamation, and management of salt-affected soils (saline, alkali/sodic, saline-sodic) with EC, ESP, SAR thresholds and crop tolerance for competitive exams
Complete guide to secondary macronutrients — Ca, Mg, S sources, forms, functions, deficiency diseases (Bitter Pit, Grass Tetany, Akiochi, Tea Yellows), and toxicity for competitive exams
Formation of soil aggregates, four structural types (platy, prismatic, blocky, spheroidal), classification by type-class-grade, and the role of structure in crop production
Gypsum, chelated micronutrients, zinc/sulphur deficiency, fertilizer application methods, suitability, crop-wise recommendations, NPK ratio, and NBS scheme for competitive exams
Complete guide to all 8 micronutrients and 6 beneficial elements — functions, deficiency diseases (Khaira, White Bud, Whiptail, Hollow Heart), toxicity, and diagnostic terms for competitive exams
Particle density, bulk density, porosity, macro and micro pores, and their relationship to soil texture, organic matter and agricultural management
Fertilizer Control Order 1957, quality control specifications, biuret limits, Fertilizer Movement Control Order 1973, and UPSC previous year questions for competitive exams
Complete guide to India's Soil Health Card Scheme — launch details, 12 parameters, sampling methods, SHM components, INM approach, and benefits for competitive exams
Soil consistence at four moisture states (dry, moist, wet), cohesion and adhesion forces, soil crusting, compaction, and their impact on tillage and crop growth
SHC, PKVY, NPOP, MOVCDNER, ONOF, NBS — key government schemes on manures, fertilizers, and soil health for exams and competitive exams
One Nation One Fertiliser (PMBJP), Mridaparikshak minilab, fertilizer statistics, NPK ratio, import dependency, NBS scheme, and budget allocations
Factors affecting soil colour (organic matter, iron oxides, drainage), Munsell colour notation (Hue, Value, Chroma), and using colour as a diagnostic tool for soil health
Revision quiz on organic manures, biofertilizers, nitrogenous, phosphatic, and potassic fertilizers, problem soils, micronutrient fertilizers, and fertilizer legislation and schemes.
Revision quiz on essential nutrients, soil testing, fertility evaluation, nitrogen, phosphorus, potassium, secondary and micronutrients, and soil health policy.
Thermal properties of soil, sources of soil heat, factors affecting soil temperature, and management practices for optimal crop production
Revision quiz on manure quality, biofertilizer use, fertilizer chemistry, problem soil reclamation, micronutrient sources, fertilizer regulation, and current soil amendment schemes.
Revision quiz on nutrient mobility, deficiency symptoms, soil test interpretation, STCR, phosphorus and potassium behavior, secondary and micronutrients, and soil health management.
Composition of soil air, gas exchange mechanisms, oxygen diffusion rate, aeration effects on plant growth, and soil temperature influence on crops
Importance, classification, soil water potential, moisture constants, water movement, infiltration, percolation, and measurement methods for competitive exams
General properties of soil colloids including size, surface area, charge, adsorption, swelling, flocculation, CEC, and phosphorus fixation
Four major types of soil colloids -- layer silicate clays, sesquioxides, allophane, and humus -- their structure, classification, and properties
Ion exchange reactions, cation exchange capacity, base saturation, anion exchange, redox potential, soil pH, and nutrient availability for competitive exams
Formation, decomposition, humus, C:N ratio, mineralization, immobilization, carbon cycle, and the Van Bemmelen factor for competitive exams
Soil microorganisms (bacteria, actinomycetes, fungi, algae), soil fauna (earthworms, nematodes, protozoa), and their roles in agriculture
USDA Soil Taxonomy, six hierarchical categories, 9 epipedons, 12 soil orders with diagnostic features, area in India, catena, caliche, and cat clays
Direct-answer guide to the 8 major soil types in India under ICAR classification: alluvial, black, red, laterite, desert, peaty, forest and salt-affected soils with crops and management.
Types of water and wind erosion, USLE equation, agronomic and engineering conservation practices, and watershed management for competitive exams
Desertification trends, degradation processes, wasteland classification (NWDB & Atlas 2019), state-wise statistics, and per capita agricultural land
Revision quiz on soil fundamentals, parent materials, soil formation, profile development, and physical properties including texture, structure, density, colour, temperature, air, and water.
Revision quiz on soil colloids, clay minerals, ion adsorption, soil organic matter, soil biology, taxonomy, Indian soils, erosion, and land degradation.
Revision quiz on detailed rock and mineral classification, weathering, pedogenic processes, soil profile terminology, texture and structure systems, density and consistence, colour notation, thermal behavior, Indian soils, erosion, and land degradation.
Pro gives you complete notes for all IBPS AFO subjects, AI-powered MCQ practice, doubt solving, spaced repetition, and mock interview prep — everything you need to crack IBPS AFO.
Soil Science for IBPS AFO covers: Soil formation, physical & chemical properties, soil classification, fertility and productivity, macro & micro nutrients, manures and fertilizers, reclamation of problem soils. It typically accounts for 12–15% of the Professional Knowledge/Technical paper. AgriDots provides free structured notes covering the complete IBPS AFO Soil Science syllabus.
Soil Science contributes approximately 12–15% of the IBPS AFO agriculture/technical paper. Focusing on this subject with structured notes and MCQ practice is key to scoring well.
Key topics: Soil formation, physical & chemical properties, soil classification, fertility and productivity, macro & micro nutrients, manures and fertilizers, reclamation of problem soils. Previous year papers show recurring questions on fundamental concepts. AgriDots Soil Science notes are structured topic-by-topic with MCQs mapped to IBPS AFO previous year papers.
Yes — AgriDots provides free Soil Science notes covering the full IBPS AFO syllabus. Basic notes are free for all users. Pro subscribers get access to advanced notes, AI-generated quizzes, doubt solving, and spaced repetition for Soil Science.