EN
The influence of the Soleflor soil bioconditioner on the soil pH, its bioactivity (the population of selected groups of soil microorganisms, the enzymatic activity of the soil), the plant vigour expressed with the SPAD index and the perennial ryegrass sward yield were investigated in a two-year field experiment in a perennial ryegrass plantation. The influence of Soleflor on the soil pH and the population of microorganisms proved to be minimal, ambiguous and statistically insignificant. The preparation was observed to have minimal influence on the increase in the enzymatic activity of soil. A noticeable reaction to fertilisation with the Soleflor preparation was observed in the plants which in both treatments with the Soleflor showed significantly greater vigour and yield than in the control samples.