Question

For composting, the optimum Carbon to Nitrogen (C:N) ratio is closest to _________.

• A. 5:1
• B. 30:1
• C. 70:1
• D. 1:1

Hint:

To optimize composting, aim for a C:N ratio of 30:1. It ensures balanced decomposition and minimizes odors.

Answer 1

The Correct Option is B

Composting involves microorganisms breaking down organic material into humus. The Carbon to Nitrogen (C:N) ratio is crucial for this decomposition's efficiency.

Step 1: An optimal C:N ratio for composting is approximately 30:1. This balance provides microorganisms with sufficient carbon for energy and nitrogen for growth, promoting effective decomposition.

Step 2: A C:N ratio that is too high (e.g., 70:1) slows the process due to a lack of nitrogen. Conversely, a ratio that is too low (e.g., 5:1 or 1:1) results in excess nitrogen, potentially causing odors and hindering microbial activity.

Therefore, the correct answer is (B) 30:1.