METHOD OF DETERMINING COEFFICIENT OF SOIL FILTRATION Russian patent published in 2014 - IPC G01N33/24 G01N15/08 

FIELD: agriculture.

SUBSTANCE: soil sample is passed through a stream of water. On the surface of the soil sample a load is placed. Beginning of dipping of the load is fixed. The parameters of the sample and the water flow are measured. The coefficient of soil filtration is calculated from the measured parameters. The value of the concentration of fulvic acid in the water stream, passed through the soil sample, is recorded. In reducing the concentration value by 10% of the initial value the fulvic acid solution is added into the stream of water directed into the soil sample, restoring the value of the fulvic acid concentration in the stream of water passed through the soil sample, to the initial value.

EFFECT: use of the claimed method extends functional capabilities of determining the filtration coefficient of soil, enables to determine quickly and accurately the filtration coefficient of soil exposed to fulvic acids, in the zone of prevalence of podzolic soils.

1 tbl, 1 ex