Współzależność między aktualną wilgotnością warstwy ornej czarnej ziemi a wskaźnikiem opadów uprzednich

The purpose of the paper was the examination of correlation between actual soil moisture (wgt%, vol%, relative humidity) determined by measurements method for black earth ploughing topsoil and Lambor’s anterior precipitation index (IL). The black earth is characterised of large level of water retention, therefore the anterior precipitation index does not reflect actual soil moisture in certain periods; particularly in spring, when the level of water in soil is high after the winter, and also during the draught if it follows the periods of large quantity of precipitation. The used statistic analisys shows that the actual soil moisture should not be replaced with anterior precipitation index carelessly.