सभी विषय खंड अ: सामान्य कृषि Pedology Soil Physics Soil Chemistry Soil Fertility Soil Microbiology Statistics
Q.61
Soil Science- ICAR JRF/SRF 2024
Statement Based +4 −1

Given below are two statements related to peak rate of runoff

Statement (I) : The factors related to retardance to flow caused by the effect of surface detention and channel storage considered
Statement (II) : The runoff coefficient is dependent only on watershed characteristics.

In light of the above statements, choose the most appropriate answer from the options given below.

Q.62
Soil Science- ICAR JRF/SRF 2024
MCQ (Single Correct) +4 −1
Soil moisture tension in a salt free soil at field capacity depending on soil texture ranges from
Q.63
Soil Science- ICAR JRF/SRF 2024
MCQ (Single Correct) +4 −1
Surangam, water harvesting structures are found in
Q.64
Soil Science- ICAR JRF/SRF 2024
MCQ (Single Correct) +4 −1

Which of the following is a traditional rainwater harvesting technique practiced in rainfed agriculture?

Q.65
Soil Science- ICAR JRF/SRF 2024
MCQ (Single Correct) +4 −1

Which of the following irrigation scheduling methods relies on soil moisture measurements to determine when irrigation is
needed?

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खंड अ: सामान्य कृषि

6 टॉपिक्स
शस्य विज्ञान, जुताई एवं फसल उत्पादन कृषि कीट विज्ञान, सूत्रकृमि विज्ञान एवं फसल सुरक्षा मृदा विज्ञान, पादप पोषण एवं सुधार कोशिका विज्ञान, पादप कार्यिकी एवं जैव रसायन कृषि मौसम विज्ञान एवं जलवायु विज्ञान फसल आनुवंशिकी, पादप प्रजनन एवं आईपीआर

Pedology

4 टॉपिक्स
Dokuchaev Pedological Concepts, Soil Profile Horizons & Comprehensive Soil Taxonomy (12 Soil Orders, Epipedons, Subsurface Horizons) 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 टॉपिक्स
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 टॉपिक्स
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 टॉपिक्स
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 टॉपिक्स
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)

Statistics

2 टॉपिक्स
Soil Statistical Analysis: Significance Testing (t-Test, F-Test), Correlation, Regression & Geostatistical Spatial Modeling सक्रिय Soil Experimental Designs: CRD, RBD, Latin Square, Factorial Trials & Split-Plot Designs in Pot and Field Studies
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