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Appendix A. Definition of Water Content Terms

A-2

θρ

gsoil

water

∗

−

0267

. cm cm

=− =− =

−

050

bulk

solid

g cm

The porosity of 0.50 defines the maximum possible volumetric water content.

The measured

value of 0.267 indicates the pore space is just over half-full of

water. If the sample is from a 20 cm depth profile, there are 5.3 cm of water in

the profile.

Water content indicates how much water is present in the soil. It can be used to

estimate the amount of stored water in a profile or how much irrigation is

required to reach a desired soil wetness.

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Campbell HydroSense II Manuale delle Istruzioni Pagina 20