DETERMINATION OF SOIL PARTICLE DENSITY OF ORDINARY CHERNOZEM
Features of pycnometer method for determination of soil particle density are considered. It is established, that the soil particle density depends on not only mineralogical and chemical contents, but a procedure of samples preparation for the analysis, and the nature of the liquid used in pycnometer method also. Besides, the data of pycnometer method is depend on microstructure of the soil sample due to filling of available microcavities by liquid (especially in case of water) and after that because of the subsequent displacement of this liquid. It is shown, than the higher microporosity of soil sample placed in pycnometer and the more its wettability, than higher will be the results of particles density.