bn:00045187n
Noun Concept
Categories: Composting, Soil chemistry, Organic acids
EN
humic acid  humic acids  humin acids
EN
A dark brown humic substance that is soluble in water only at pH values greater than 2 WordNet 3.0
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EN
The half-life of humic acid is measured in centuries WordNet 3.0 & Open English WordNet
WordNet 3.0 & Open English WordNet
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