Granular matrix formulation of Bacillus thuringiensis for control of the European corn borer (Lepidoptera: Pyralidae)

A low-cost, granular matrix formulation of Bacillus thuringiensis Berliner var. kurstaki, composed primarily of corn flour and containing a feeding stimulant composed of cottonseed flour and sugars, was developed for use against the European corn borer, Ostrinia nubilalis (Hubner), on whorl-stage co...

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Bibliographic Details
Published in:Journal of economic entomology 1996-10, Vol.89 (5), p.1088-1094
Main Authors: Ridgway, R.L. (Beltsville Agricultural Research Center, USDA, ARS, Beltsville, MD.), Illum, V.L, Farrar, R.R. Jr, Calvin, D.D, Fleischer, S.J, Inscoe, M.N
Format: Article
Language:English
Subjects:
AUXILIAIRE DE LUTTE BIOLOGIQUE
BACILLUS THURINGIENSIS
Biological and medical sciences
Biological control
CONSOMMATION ALIMENTAIRE
CONSUMO DE ALIMENTOS
Control
CONTROL BIOLOGICO
DOSE D'APPLICATION
DOSIS DE APLICACION
FARINE DE MAIS
FORMULACIONES
FORMULATION
FOTOLISIS
Fundamental and applied biological sciences. Psychology
GRANULE
GRANULOS
HARINA DE MAIZ
LLUVIA
LUTTE BIOLOGIQUE
MEDICAMENT
MEDICAMENTOS
MORTALIDAD
MORTALITE
ORGANISMOS PARA CONTROL BIOLOGICO
OSTRINIA NUBILALIS
PENNSYLVANIA
PENNSYLVANIE
PHOTOLYSE
Phytopathology. Animal pests. Plant and forest protection
PLUIE
Protozoa. Invertebrates
Pyralidae
ZEA MAYS
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Summary:A low-cost, granular matrix formulation of Bacillus thuringiensis Berliner var. kurstaki, composed primarily of corn flour and containing a feeding stimulant composed of cottonseed flour and sugars, was developed for use against the European corn borer, Ostrinia nubilalis (Hubner), on whorl-stage corn. Laboratory experiments indicated that a corn flour agricultural commodity product was a suitable carrier, that the feeding stimulant enhanced the activity of B. thuringiensis, and that the granular matrix protected B. thuringiensis from photodegradation. Results of a greenhouse test showed higher mortality of the European corn borer on corn plants treated with the granular matrix than on plants treated with a standard commercial granular formulation of B. thuringiensis. Mortality with either treatment was increased by application of simulated rainfall. In a field test, the granular matrix applied at a rate of 5.5 kg/ha gave control comparable with that achieved by the commercial standard applied at a rate of 11 kg/ha. Results indicated that increased efficacy or reduction in costs of management of the European corn borer with B. thuringiensis should be possible through the use of the granular matrix formulation
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/89.5.1088