Soil

Soil Analysis

A)Physical Properties

           1. Bulk density, particle density

2.Soil texture

3. Soil moisture

4. Soil moisture tension

5. Infiltration rate

6. Hydraulic conductivity

7.Temperature measurement

   B)Chemical Properties

1. pH

2. Electrical conductivity

3. Organic carbon 

4. Water soluble organic carbon

5. Water soluble carbohydrates

6. Humic acid and fluvic acid

7. Ether soluble fractions

8. Hot water soluble fraction

9. Total hydrolysable nitrogen

10.  Hydrolysable NH4 - N and hexosamine - N

11. Amino acid nitrogen

12. Redox potential

13. Lime potential

14. Phosphate potential

15. Phosphorus fixing capacity of soil

16. Potassium fixing capacity of soil

17. Carbonate (CO32-) and Bicarbonate (HCO3)

18. Chloride

 C)Biological Properties

1. Dissolved oxygen

2. Biological oxygen demand (BOD)

3. Chemical oxygen demand (COD)

4. Biomass nitrogen

5. Biomass carbon

6. Soil enzymatic activities

 D)Nutrient analysis

1.    Loss on ignition

2.    Preparation of hydrochloric acid extract

3.    Estimation of acid insolubles

4.    Available nitrogen

5.    Available phosphorus

6.    Available potassium

7.    Exchangeable calcium and magnesium

8.    Available sulphur

9.    Available micronutrients  - Fe, Mn, Cu, Zn

10.  Available boron