Description: Studies on the monitoring of biogenic element content concentrations in drainage water were carried out on a production field in 2009-2010 belonging to the Experimental and Didactic Station of the Poznan University of Life Sciences, with a branch in Swadzim. During the two years of the research, it was found that the amount of N-NO3, P, K, Mg, Ca, and the salinity of drainage water from the production field depended on the time when the water was collected for analysis