At low matric suctions (high moisture content near saturation, $0$ to $0.33\text{ bar}$ / $0$ to $33\text{ kPa}$), water is held primarily in the large capillary macropores and inter-aggregate voids; therefore, water retention is dominated by soil structure (aggregate size, pore size distribution, and bulk density).
At high matric suctions ($\gt 1\text{ bar}$ to $15\text{ bars}$), water is held as thin adsorption films on particle surfaces, governed predominantly by soil texture and specific surface area. (Correct answer: Option 2)
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2
Environmental Science- ICAR JRF/SRF 2024 (Q.23)
MCQ (Single Correct)+4−1
What is the coordination number of cubic tetrahedral type packing of soil spherical particles?
Apparent Drought (Pseudo-drought): Occurs when crop water stress and failure are caused not by an abnormal deficit in regional rainfall, but by human management error—specifically the wrong selection of crops or long-duration varieties ill-suited to the normal regional agro-climatic growing period. (Correct answer: Option 1)
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5
Environmental Science- ICAR JRF/SRF 2024 (Q.28)
MCQ (Single Correct)+4−1
Bilinear interpolation is the type of Interpolation where for each new location the intensity of the
2D spatial resampling technique in digital image processing.
Calculates the output digital number (DN) by computing a distance-weighted linear average across the four nearest neighboring pixels surrounding the transformed coordinates. (Correct answer: Option 1)
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