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Understanding Composting and the C:N Ratio
Formula
Successful composting depends on maintaining an optimal carbon-to-nitrogen (C:N) ratio of about 25:1 to 30:1. Carbon-rich 'browns' (leaves, paper, straw) have C:N ratios around 50-80:1, while nitrogen-rich 'greens' (food scraps, grass) are around 15-25:1.
When the ratio is right, microorganisms decompose materials efficiently, generating heat that kills pathogens and weed seeds. Too much carbon slows decomposition; too much nitrogen causes odor and nutrient loss.
Common use cases:
- Home composting optimization
- Community garden waste management
- Reducing landfill waste
Frequently Asked Questions
Dr. David Park
Applied Mathematician, PhD Mathematics
David holds a PhD in Applied Mathematics from MIT. He has published research on numerical methods and computational algorithms used in engineering and scientific calculators.
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