Evaluation of soil solar heating for control of damping-off fungi in two forest nurseries in France

Field experiments were carried out at two different forest nurseries during the summer of 1994 to examine the efficacy of soil solarization for the control of damping-off. Both soils hosted Pythium spp., Fusarium spp. and Rhizoctonia solani as damping-off agents. Soil samples from solarized, steamed...

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Bibliographic Details
Published in:Biology and fertility of soils 1997-08, Vol.25 (2), p.189-195
Main Authors: Le Bihan, B, Soulas, M.L, Camporota, P, Salerno, M.I, Perrin, R
Format: Article
Language:English
Subjects:
Biological and medical sciences
biological control
Control
damping off
disease control
efficacy
forest nurseries
Fundamental and applied biological sciences. Psychology
fungal antagonists
Fungal plant pathogens
Fusarium
Life Sciences
Other methods
Phytopathology. Animal pests. Plant and forest protection
Pinus nigra
plant diseases and disorders
Pythium
soil heating
soil infectivity
soil solarization
Thanatephorus cucumeris
Trichoderma
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Summary:Field experiments were carried out at two different forest nurseries during the summer of 1994 to examine the efficacy of soil solarization for the control of damping-off. Both soils hosted Pythium spp., Fusarium spp. and Rhizoctonia solani as damping-off agents. Soil samples from solarized, steamed, fumigated and untreated plots were periodically collected and assayed for soil infectivity. Solarization with a double layer of polyethylene film was as effective as steaming or fumigation in reducing soil infectivity in the uppermost layer. During July the temperature of covered beds rose as high as 50 degrees C at a soil depth of 5 cm. The method achieved good control of Pythium spp., the main cause of damping-off at both nurseries, whereas Fusarium spp. were more tolerant. The association of Trichoderma spp. with a reduction of soil infectivity at the last sampling date strongly suggested that biocontrol processes were induced after solarization. Soil solarization provides a suitable method for control of damping-off.
ISSN:0178-2762
1432-0789
DOI:10.1007/s003740050302