Abstract

In specified test conditions gases from cultures of Forms scutellatus (Schw.) Cooke inhibited the germination and growth of lettuce seedlings after diffusion through air, or through layers of peat, sand or peralite. They had no visible effect on 8 species of bacteria and only very slight effects on the growth of Aspergillus niger . The concentration of gaseous HCN produced by the cultures could account for the effects observed.

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