摘要：The application of compost is a beneficial and economical solution for improving physical and biochemical properties of soil. Many of the farmers issues relate to the different organisms involved in the composting process and the effects of compost on the soil fauna. Determining the species composition of nematodes before using compost is an assessment of the ongoing process of composting and essential for agricultural production. The aim of this work was to investigate the structure of nematode community in different types of mature compost. For the purposes of the study, the following types of compost were used: forest origin (KI and KII) and agricultural origin (KIII). The difference between the compost KI and KII was the size of the substrate particles. The results in this work were obtained by field and laboratory studies. The nematode community in the compost types have a difference in their number and species composition. The highest number was recorded in forest compost KII, followed by forest compost KI and the lowest number was in the agricultural compost KIII. The most common were species of Aphelenchoides, Diploscapter, Monachoides, Cephalobus, Ditylenchus, and Diplogastrellus and Dorylaimus were only found in the forest compost KI. The biodiversity was greater in the compost KII and lowest in the compost KIII. The results could be used as an estimate of the composting process and the quality of the compost
