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Kolkata Gypsum Powder For High Alkaline Soils

Humic acid is an organic chemical produced by decaying plants and animals humic acid is one of the major components of humic substances which is dark brown in colour and the major constituents of soil organic matter humus that contributes to soil chemical and physical properties and are also precursors of some fossil fuelsumic acid can also be found in peat, coal, many upland streams and.