Q.30
The term variance is used to denote:
Soil Science- ICAR JRF/SRF 2024
Official ICAR JRF/SRF 2024 solved question paper with verified bilingual step-by-step solutions.
Q.33
Which experimental design is a single factor design?
Q.38
The most dominant soil order in India is:
Q.39
Minerals containing iron are’
(A) . Hematite
(B) . Goethite
(C) . Sphalerite
(D) . Magnetite
Choose the correct answer from the options given below:
Q.44
Most weathered soil order is
General Agriculture
6 TopicsPedology
4 Topics
Dokuchaev Pedological Concepts, Soil Profile Horizons & Comprehensive Soil Taxonomy (12 Soil Orders, Epipedons, Subsurface Horizons)
Active
Earth's Crust Geochemistry, Rock Weathering, Weathering Indices & Pedogenic Processes (Addition, Loss, Translocation, Transformation)
Soil Survey Methodologies, Remote Sensing, GIS Mapping & Major Soil Groups of India (Alluvial, Black, Red, Laterite, Desert)
Moisture and Temperature Soil Regimes, Land Capability & Fertility Capability Classification (FCC)
Soil Chemistry
3 Topics
Surface Chemistry: Diffuse Double Layer (DDL), Zeta Potential, Cation/Anion Exchange Capacity & Lyotropic Adsorption Series
Soil Organic Matter: Humus Fractionation (Humic, Fulvic, Humin), Carbon-Nitrogen Dynamics & van Bemmelen Factor (1.724)
Clay Mineralogy: Layer Silicates (Kaolinite, Smectite, Illite), Amorphous Minerals & X-Ray Diffraction (XRD) Identification
Soil Fertility
4 Topics
Micronutrient Chemistry (Fe, Mn, Zn, Cu, B, Mo): Ionic Strength, Availability Indices & Chelation Equilibria
Salt-Affected & Problematic Soils Chemistry: Saline vs Sodic Soils, ESP, SAR, Gypsum Requirement & Liming of Acid Soils
Essential Macronutrient Dynamics (N, P, K, S, Ca, Mg): Transformations, Fixation Mechanisms & Soil Solution Equilibrium
Soil Testing Principles, Fertilizer Recommendations (STCR), Plant Analysis, Hidden Hunger & Critical Nutrient Limits
Soil Microbiology
3 Topics
Soil Enzymes (Dehydrogenase, Urease, Phosphatase), Pesticide Biodegradation & Biofertilizer Inoculant Technology
Soil Microbiota Diversity, Rhizosphere Biology & Microbial Ecology (Bacteria, Fungi, Actinomycetes, Protozoa)
Biogeochemical Nutrient Transformations: Nitrogen Fixation (Rhizobium, Azotobacter), Nitrification, Ammonification & P/S/Fe Mobilization
Soil Physics
4 Topics
Soil Water Retention (pF Curve, Suction Scales, Tensiometry) & Saturated Water Flow (Darcy's Law, Hydraulic Conductivity)
Soil Structure, Aggregate Stability, Bulk/Particle Density, Porosity & Crusting Mechanics in Sodic Soils
Soil Texture (Stokes' Law Principles & Limitations), Mechanical Particle Size Analysis & Soil Packing Geometry
Unsaturated Water Flow, Infiltration Kinetics (Philip's Model), Soil Aeration (ODR), Thermal Regimes & Physical Erosion (USLE)
Official PYQ Papers
Previous Year Papers of Soil Science
Practice official shift-wise question papers with answer keys and detailed explanations on the actual exam pattern.
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Previous Papers
2024
29-06-2024