Effect of an Extract from Saprozoic Nematode-Infested Compost on the Mycelial Growth of Agaricus brunnescens

Extracts from compost infested with Caenorhabditis elegans suppressed mycelial growth of Agaricus brunnescens. An extract from uninfested compost also inhibited mycelial growth but to a lesser degree. The critical role of compost bacteria and/or other compost micro-organisms is implicated by these results.