Potential for Biological Control of Botrytis cinerea in Pinus sylvestris Seedlings
Grey mould (Botrytis cinerea Pers.: Fr.) is the most common economically important fungal disease in Swedish forest nurseries. In tests in a growth room, foliage of predisposed (preinoculation incubation at 35Â°C for 4 days) Scots pine (Pinus sylvestris L.) seedlings was sprayed with suspensions containing MycostopÂ®, BinabÂ® TF.WP or GlioMixÂ® at concentrations of 0.5, 1 or 0.5 g lâ^’1, respectively, and/or conidia of B. cinerea (106 spores mlâ^’1). Binab and GlioMix reduced grey mould in needles by 94 and 92%, respectively, and were as effective as the fungicide EuparenÂ® M 50 WG, while Mycostop reduced disease by 51%. In one trial in a forest nursery, Mycostop, Binab and GlioMix, each applied two and four times during the growing season, suppressed spontaneous B. cinerea infections in needles of first year container-grown P. sylvestris seedlings by 16â–“57%, and were as effective as recommended fungicidal sprays. It was concluded that biological control has potential to effectively suppress grey mould in seedlings in forest nurseries.
Document Type: Research Article
Affiliations: Department of Forest Mycology and Pathology, Swedish University of Agricultural Sciences, SE-750 07, P.O. Box 7026, Uppsala
Publication date: 2004-04-01