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The potential for grey mould control on Douglas-fir seedlings was investigated using under-bench ventilation and aerated styroblocks. Twenty-five percent of all ventilated styroblock seedlings were infected with Botrytis cinerea while 75% of the control seedlings showed signs of infection. The reduced incidence of grey mould in the ventilated treatments was attributed to a more rapid drying of the seedling canopy following watering. The lowest frequency of ideal conditions for B. cinerea infection by spore germination was observed in the seedling canopy of the treatment receiving unheated, forced air ventilation.
Peterson, M.J., Sutherland, J.R.. 1989. Grey Mould Control by Seedling Canopy Humidity Reduction Through Under-Bench Ventilation and Styroblock Aeration. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development. FRDA Research Report. FRR77
Topic: FLNRORD Research Program
Keywords: Seedling, Production
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