1. What is Carbon/Nitrogen Ratio?

The Carbon/Nitrogen (C:N) ratio is a critical factor in composting that affects the speed and quality of decomposition. It represents the proportion of carbon-rich to nitrogen-rich materials in your compost pile.

2. How Does the Calculator Work?

The calculator uses the simple C:N ratio formula:

Where:

• \( Carbon \) — Weight of carbon-rich materials in pounds
• \( Nitrogen \) — Weight of nitrogen-rich materials in pounds

Explanation: The ideal C:N ratio for composting is typically between 25:1 and 30:1. This balance provides enough energy (carbon) and protein (nitrogen) for microorganisms to thrive.

3. Importance of C:N Ratio in Composting

Details: A proper C:N ratio ensures efficient decomposition, minimizes odors, and produces high-quality compost. Too much carbon slows decomposition, while too much nitrogen can cause ammonia odors.

4. Using the Calculator

Tips: Enter the weight of your carbon materials (browns like leaves, straw, paper) and nitrogen materials (greens like grass clippings, food scraps). The calculator will determine your C:N ratio.

5. Frequently Asked Questions (FAQ)

Q1: What happens if my ratio is too high (too much carbon)?
A: The pile will decompose very slowly as microorganisms won't have enough nitrogen for growth and reproduction.

Q2: What if my ratio is too low (too much nitrogen)?
A: Excess nitrogen may be lost as smelly ammonia gas, and the pile may become anaerobic.

Q3: What are common carbon-rich materials?
A: Dry leaves, straw, wood chips, sawdust, paper, cardboard (shredded), and corn stalks.

Q4: What are common nitrogen-rich materials?
A: Fresh grass clippings, vegetable scraps, coffee grounds, manure, and green plant trimmings.

Q5: Can I adjust an unbalanced pile?
A: Yes, add carbon materials if ratio is too low, or nitrogen materials if ratio is too high, and remix the pile.