Gallery History of Hungarian mushroom industry – Composting on 2010. January 26. Tuesday More in Gallery: Polish Mushroom Days – Pieczarkalia 2017 2017. September 11. Monday Mushroom season is here – conference in Rostov-on-Don 2015. October 30. Friday A visit at Russian Mushroom Days, 2015. 2015. June 23. Tuesday History of Hungarian mushroom industry – Composting Related articles: Opportunities for spent mushroom substrate reuse History of Hungarian mushroom industry – Spawn production History of Hungarian mushroom industry – cultivation Mushroom market news 2017-18.