Given below are two statements, one is labelled as Assertion (A)... | Agrigyan

Q.1

Soil and Water Conservation Engineering- ICAR JRF/SRF 2024 (Q.91)

Assertion & Reason

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A) : Soil moisture in clay soil limits the rate of infiltration

Reason (R) : Soil moisture causes some of the particles of clay soil to swell and thereby reduce both the pore space and the rate of water movement ie, infiltration

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

Both (A) and (R) are true and (R) is NOT the correct explanation of (A) Both (A) and (R) are true and (R) is the correct explanation of (A) (A) is true but (R) is false. (A) is false but (R) is true.

General Agriculture

6 Topics

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Open Channel Hydraulics

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Steady Uniform Flow in Open Channels: Continuity, Manning's & Chezy's Equations, Hydraulic Radius & Section Factors Specific Energy, Critical Flow & Channel Transitions: Critical Depth, Froude Number, Venturi Flumes & Transitions

Soil, Plant, Water and Atmosphere Relationship

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Evapotranspiration Dynamics & Atmospheric Demand: Potential/Actual ET, Penman-Monteith, Dalton's Law & Transpiration Ratios Soil Moisture Constants & Soil-Water Classification: Field Capacity, Permanent Wilting Point, Available Water & Specific Surface Area Soil Water Potential & Energy States: Matric, Osmotic, Gravitational, Pressure Potentials & pF Curves

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Soil and Water Conservation

4 Topics

Agronomic & Mechanical Erosion Control Structures: Contour Farming, Strip Cropping, Bunding, Terracing & Graded Channels Soil Erosion Mechanics & Water Erosion: Splash, Sheet, Rill, Gully Erosion & Universal Soil Loss Equation (USLE / RUSLE) Wind Erosion Mechanics & Control: Saltation, Suspension, Surface Creep, Windbreaks & Shelterbelts Gully Control & Permanent Conservation Structures: Drop Spillways, Chute Spillways, Drop Inlets & Energy Dissipators

Watershed Management

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Irrigation Water Scheduling & Conveyance: Soil Moisture Depletion, Canal Lining, Hazen-Williams Friction & Water Storage Surface Irrigation Methods: Border Strip, Check Basin, Furrow Irrigation Hydraulics & Application Efficiencies Pressurized Irrigation Systems: Drip / Trickle Irrigation, Emission Uniformity, Micro-Sprinklers & Fertigation

Management of Degraded, Waterlogged and Other Problematic Soils and Water

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Saline, Alkaline & Waterlogged Soil Reclamation: Leaching Requirement, Gypsum Requirement & Conjunctive Water Use Agricultural Drainage Systems: Surface Drainage, Subsurface Pipe/Tile Drainage, Water Table Control & Drainage Coefficients Steady State Drainage Design: Hooghoudt's Equation, Ernst Equation, Drain Spacing & Tile Depth Active

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Soil and Water Conservation Engineering- ICAR JRF/SRF 2024

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