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Soil / Organic gardening / Soil science / Humic acid / Soil chemistry / Humus / Leonardite / Chelation / International Humic Substances Society / Agriculture / Chemistry / Composting


Humic Materials for Agriculture By R.L. Mikkelsen Humic materials…very large and complex molecules extracted from organic matter…have been used in many ways for plant production. There are numerous reports of plant r
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Document Date: 2010-06-30 12:48:12


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