Web-Resol Tudo sobre Limpeza Urbana e Resíduos Sólidos!
The term “browns” is used to denote organic materials high in carbon, more specifically, materials whose carbon to nitrogen ratio is higher than 30:1. (Materials high in nitrogen are referred to as “greens”). Achieving a carbon-to-nitrogen ratio of about 30:1 is one factor in creating favorable conditions for backyard pile composting.
SOURCE: www.mastercomposter.com
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