Organic Matter Properties of Spent Button Mushroom Substrate in the Context of Soil Organic Matter Reproduction

The objective of the work was to evaluate selected properties spent substrates used for growing button mushrooms (SMSs) and content quality organic matter in this material context rational use fertilisation purposes potential impact on soil environment. materials were sampled at production facilities located east Mazovia. density amount substrate shelves where cultivated determined. following analysed laboratory: reaction, carbonate content, TC (total carbon) TOC contents, total nitrogen, fraction composition, humic acids properties. It confirmed that had a marked enrich soils matter, carbonates. analysis revealed most important qualitative related relatively high share labile compounds (the separated with 0.05 M H2SO4 fulvic acids). similar regardless their origins. (HAs) molecules displayed substantial aliphatic structures which are typical these initial decomposition stage. can be assumed that, due such properties, mushroom directly introduced into improve prevent degradation.