Question

The amount of organic matter in a soil with 'Value 0' according to Munsell colour system is-

• A. High
• B. Medium
• C. Low
• D. Does not depend

Hint:

Lower Munsell Value = Darker Soil = Higher Organic Matter content.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Soil color is systematically quantified using the Munsell soil color chart, which is based on three parameters: Hue (spectral color), Value (lightness or darkness), and Chroma (purity or strength of color).

Step 2: Detailed Explanation:
The "Value" scale in the Munsell system ranges from 0 (absolute black) to 10 (absolute white).
Soil organic matter acts as a natural dark-colored pigment that coats soil mineral particles.
As the organic matter content increases, the soil color becomes progressively darker, causing the Munsell Value to decrease toward 0.
Therefore, a Munsell Value of 0 indicates an extremely dark (black) soil, signifying a high accumulation of organic matter.

Step 3: Final Answer:
The amount of organic matter in a soil with Munsell Value 0 is high.