Different Nutrient Test Methods in Soil

🧪 Different Nutrient Test Methods in Soil

Nutrient Determination	Analyzing / Test Method
Total Nitrogen in Soil	Kjeldahl Process
Available Nitrogen (N)	Alkaline Permanganate Method
Phosphorus (Acidic Soil)	Bray No. 1 Method
Phosphorus (Neutral & Alkaline Soil)	Olsen’s Method
Potassium (K) & Sodium (Na)	Flame Photometer
Sulphate Sulphur (SO₄²⁻)	Turbidimetric Method
Organic Carbon	a) Walkley & Black Method b) Rapid Oxidation (KMnO₄) c) Morgan’s Method
Available Potassium (K₂O)	Ammonium Acetate Extraction