Which of the following is NOT a significant contributor to... | Agrigyan

सभी विषय खंड अ: सामान्य कृषि Pedology Soil Physics Soil Chemistry Soil Fertility Soil Microbiology Statistics

Q.16

Soil Science- ICAR JRF/SRF 2024

MCQ (Single Correct) +4 −1

Dark period is critical in which type of plant?

Short day plant Long day plant Day neutral plant All the options

Q.17

Soil Science- ICAR JRF/SRF 2024

MCQ (Single Correct) +4 −1

Which of the following is NOT a significant contributor to greenhouse gas emissions from livestock farming?

Carbon dioxide Methane Nitrous oxide Ammonia

Q.18

Soil Science- ICAR JRF/SRF 2024

MCQ (Single Correct) +4 −1

Fe deficiency is mostly seen in crops growing on

Calcareous or alkaline soils Salt affected soils Acidic soils Neutral soils

Q.19

Soil Science- ICAR JRF/SRF 2024

MCQ (Single Correct) +4 −1

EDV (Essentially Derived Varieties) are those which are derived from

crossing two commercially known varieties hybrid introduced from other countries existing variety through genetic engineering or mutation crossing commercially known variety with its wild relative

Q.20

Soil Science- ICAR JRF/SRF 2024

MCQ (Single Correct) +4 −1

What is the role of "companion planting" in agriculture?

Enhancing soil fertility through crop rotation Growing different crop species together to deter pests Cultivating plants in hydroponic system Increasing soil compaction through cover cropping

खंड अ: सामान्य कृषि 20
Pedology 20
Soil Physics 27
Soil Chemistry 14
Soil Fertility 20
Soil Microbiology 9
Statistics 10

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 सक्रिय 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 Soil Experimental Designs: CRD, RBD, Latin Square, Factorial Trials & Split-Plot Designs in Pot and Field Studies

Soil Science- ICAR JRF/SRF 2024

120 Questions Bilingual

RPSC Agriculture Exams

5 Exams

Food Safety Officer Assistant Agriculture Officer Agriculture Officer RPSC Agriculture Research Officer RPSC AARO

RSSB Agriculture Exams

1 Exam

कृषि पर्यवेक्षक (RSSB)

National & PG Entrances

4 Exams

ICAR AIEEA PG CUET UG Rajasthan Agriculture Pre-PG

ICAR JRF/SRF Active