Question:
The degree of compost maturity can be assessed by:
The degree of compost maturity can be assessed by:
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Compost maturity indicators:
- C/N ratio (20:1 or lower).
- Seed germination index (> 80%).
- Temperature (ambient).
- Odor (earthy smell).
- C/N ratio (20:1 or lower).
- Seed germination index (> 80%).
- Temperature (ambient).
- Odor (earthy smell).
Updated On: Aug 27, 2026
- Seed germination test only
- Infrared technique only
- Moisture content only
- Both, seed germination test and infrared technique
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Question:
Compost maturity assessment is important for determining the suitability of compost for agricultural use.
Step 2: Detailed Explanation:
Compost maturity can be assessed by:
- Seed germination test: Measures the phytotoxicity of the compost. Mature compost supports good seed germination.
- Infrared technique: Used to estimate the carbon-to-nitrogen ratio and organic matter content.
- Moisture content: While important, it does not directly indicate maturity.
Thus, both the seed germination test and the infrared technique are used to assess compost maturity.
Step 3: Final Answer:
Thus, the degree of compost maturity can be assessed by both seed germination test and infrared technique, which corresponds to option (D).
[0.5cm]
Compost maturity assessment is important for determining the suitability of compost for agricultural use.
Step 2: Detailed Explanation:
Compost maturity can be assessed by:
- Seed germination test: Measures the phytotoxicity of the compost. Mature compost supports good seed germination.
- Infrared technique: Used to estimate the carbon-to-nitrogen ratio and organic matter content.
- Moisture content: While important, it does not directly indicate maturity.
Thus, both the seed germination test and the infrared technique are used to assess compost maturity.
Step 3: Final Answer:
Thus, the degree of compost maturity can be assessed by both seed germination test and infrared technique, which corresponds to option (D).
[0.5cm]
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