How to calculate the non capillary porosity?

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Vaibhav Amarsinh Rajemahadik

Yes, it is possible by knowing the volume of water occupied in soil after fully saturated soil by deducting the voulme of water after drainage on oven dry wt. Basis.

Abolfazl Nasseri

Please see the following paper:

Amer, A.M., 2012. Water flow and conductivity into capillary and non-capillary pores of soils. Journal of soil science and plant nutrition, 12(1), pp.99-112.

http://dx.doi.org/10.4067/S0718-95162012000100009

Dharmikkumar Hirpara

Capillary porosity is determined by finding the volume of water retained in soil at 50 cm tension. The non capillary porosity is determined by subtracting the value of capillary porosity from the total porosity value.

Porosity: It is the ratio of total volume of pore space to total volume of soil