The aim of the present research was to determine the survival rate and the rate of inactivation of indicator bacteria Salmonella Senftenberg W₇₇₅ in soil, depending on the cultivation of selected agricultural crops. The research was carried out over 2005-2006 at the UTP Experimental Station at Mochełek. In the experiment the role of the carrier of Salmonella Senftenberg W₇₇₅ bacilli was played by communal waste compost introduced into the soil environment, on experimental plots with agricultural plantation of oat, mixture of oat with yellow lupine, spring rye and a mixture of spring rye with yellow lupine. The present research demonstrated that the weekly elimination rate of Salmonella Senftenberg W₇₇₅ in soil, depending on respective field crops, ranged from 0.33 to 0.46 log, while the maximum survival time of detectable microorganisms – from 18 to 24 weeks.

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