Effect of population dynamics of Pseudomonas cepacia and Paecilomyces lilacinus on colonization of polyfoam rooting cubes by Rhizoctonia solani

Suspensions of Pseudomonas cepacia (strain 5.5B) and Paecilomyces lilacinus (isolate 6.2F) were applied to polyfoam rooting cubes for control of stem rot of poinsettia caused by Rhizoctonia solani. The populations of antagonists and colonization of rooting cubes by R. solani were monitored during a...

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Bibliographic Details
Published in:Applied and Environmental Microbiology 1994-08, Vol.60 (8), p.2852-2857
Main Authors: Cartwright, K.D, Benson, D.M
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Biological control
Control
CONTROL DE ENFERMEDADES
CONTROLE DE MALADIES
ENRACINEMENT
ENRAIZAMIENTO
EVOLUCION DE LA POBLACION
EVOLUTION DE LA POPULATION
FONGICIDE
FORMULACIONES
FORMULATION
Fundamental and applied biological sciences. Psychology
Fungal plant pathogens
FUNGICIDAS
Microorganism-Plant Interactions
PAECILOMYCES
Paecilomyces lilacinus
PESTICIDE MICROBIEN
Phytopathology. Animal pests. Plant and forest protection
PLAGUICIDAS MICROBIANOS
PSEUDOMONAS CEPACIA
RHIZOCTONIA
Rhizoctonia solani
SUBSTRAT DE CULTURE
SUBSTRATOS DE CULTIVO
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Summary:Suspensions of Pseudomonas cepacia (strain 5.5B) and Paecilomyces lilacinus (isolate 6.2F) were applied to polyfoam rooting cubes for control of stem rot of poinsettia caused by Rhizoctonia solani. The populations of antagonists and colonization of rooting cubes by R. solani were monitored during a 3-week period. Colonization of cubes by R. solani was reduced in cubes treated with P. cepacia, but the population of P. cepacia decreased by as much as 97% during the test period. Increased colonization by R. solani was correlated with a decline in population of P. cepacia. P. lilacinus was more persistent than P. cepacia in cubes, with only a 21% reduction observed during the 3-week period. Colonization of the P. lilacinus-treated cubes by R. solani was significantly less than colonization of infested controls. No correlation existed between population of P. lilacinus and colonization of cubes by R. solani
ISSN:0099-2240
1098-5336
DOI:10.1128/AEM.60.8.2852-2857.1994