A suitable amount of soil is digested with chromic acid and sulphuric acid using heat of sulphuric acid dilution, and soil organic matter is oxidised. A titration with standard Ferrous Ammonium Sulphate solution using diphenylamine as an indicator determines the excess of chromic acid that has not been reduced by the soil's organic matter [16] .
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Soil Organic Matter Determination
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Other organizations : Indian Council of Agricultural Research
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Variable analysis
independent variables
- Amount of soil digested with chromic acid and sulphuric acid
- Excess of chromic acid that has not been reduced by the soil's organic matter
- Use of heat of sulphuric acid dilution
- Titration with standard Ferrous Ammonium Sulphate solution
- Use of diphenylamine as an indicator
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