Survival of Scots pine seedlings after biological and chemical control of damping‐off in plastic greenhouses

Survival of pine seedlings was tested in greenhouses where substrates were infected with Rbizoctonia, Fusarium or Rbizoctonia with Fusarium. To reduce the pathogen menace biological (sterile sawdust, Tricboderma or sawdust with Tricboderma) or chemical (seed protection) treatments were performed. Incorporation of sawdust or sawdust with Tricboderma 20 days before sowing increased the survival of seedlings and it was comparable to protection with Nemispor for Fusarium‐menace, with Funaben T for Rbizoctonia menace and Oxafun T or Karbochin for both pathogens.