Search Results for: Solid residue extract from oils
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whether that was compost, manure, or even human night soil. these ancestral agricultural practices gave carbon—broken-down organic matter—back to the soil while delivering nitrogen (n), phosphorus (p), and potassium (k) as well. with the advent of chemically-synthesized fertilizers, however, using only solid...
https://www.smart-fertilizer.com/articles/organic-matter/