Association of Verticillium chlamydosporium and Paecilomyces lilacinus with Root-knot Nematode Infested Soil

Population densities of Meloidogyne incognita and the nematophagous fungi, Paecilomyces lilacinus and Verticillium chlamydosporium, were determined in 20 northern California tomato fields over two growing seasons. Paecilomyces lilacinus was isolated from three fields, V. chlamydosporium was isolated...

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Veröffentlicht in:Journal of nematology. - 1969. - 22(1990), 2 vom: 16. Apr., Seite 207-13
1. Verfasser: Gaspard, T (VerfasserIn)
Weitere Verfasser: Jaffee, B A, Ferris, H
Format: Aufsatz
Sprache:English
Veröffentlicht: 1990
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Lycopersicon esculentum Meloidogyne incognita Paecilomyces lilacinus Verticillium chlamydosporium biological control tomato
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100 1 |a Gaspard, T  |e verfasserin  |4 aut 
245 1 0 |a Association of Verticillium chlamydosporium and Paecilomyces lilacinus with Root-knot Nematode Infested Soil 
264 1 |c 1990 
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520 |a Population densities of Meloidogyne incognita and the nematophagous fungi, Paecilomyces lilacinus and Verticillium chlamydosporium, were determined in 20 northern California tomato fields over two growing seasons. Paecilomyces lilacinus was isolated from three fields, V. chlamydosporium was isolated from one field, and both fungi were isolated from 12 fields. Verticillium chlamydosporium numbers were positively correlated with numbers of M. incognita and P. lilacinus. Paecilomyces lilacinus numbers were positively correlated with V. chlamydosporium numbers, but they did not correlate with M. incognita numbers. The correlation coefficients were low (R < 0.5) but significant (P < 0.05). All P. lilacinus and V. chlamydosporium field isolates parasitized M. incognita eggs in vitro. In a greenhouse study, numbers of V. chlamydosporium and P. lilacinus increased more in soils with M. incognita-infected tomato plants than in soil with uninfected tomato plants. After 10 weeks, the Pf/ Pi of second-stage juveniles in soils infested with P. lilacinus, V. chlamydosporium, and M. incognita was 47.1 to 295.6. The results suggest V. chlamydosporium and P. lilacinus are not effectively suppressing populations of M. incognita in California tomato fields 
650 4 |a Journal Article 
650 4 |a Lycopersicon esculentum 
650 4 |a Meloidogyne incognita 
650 4 |a Paecilomyces lilacinus 
650 4 |a Verticillium chlamydosporium 
650 4 |a biological control 
650 4 |a tomato 
700 1 |a Jaffee, B A  |e verfasserin  |4 aut 
700 1 |a Ferris, H  |e verfasserin  |4 aut 
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