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 is a biological process where organic matter is decomposed by microorganisms into humus. The Carbon to Nitrogen (C:N) ratio plays a critical role in the efficiency of this process.

Step 1: The optimum C:N ratio for composting is typically around 30:1. This ratio ensures that microorganisms have enough carbon for energy and nitrogen for growth, leading to efficient decomposition.

Step 2: If the C:N ratio is too high (e.g., 70:1), the process slows down because too much carbon can result in insufficient nitrogen. Conversely, if the ratio is too low (e.g., 5:1 or 1:1), it leads to an excess of nitrogen, which may produce odors and inhibit microbial activity.

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