Journal ArticleDOI
Development of a model for prediction of target insect mortality following field application of a Bacillus thuringiensis formulation
TLDR
A model for predicting mortality of Schizura concinna larvae on Cercis occidentalis trees following application of Bacillus thuringiensis formulations is based on an estimation of the effective dose and the probability of larval mortality is calculated by means of a multiple logistic dose-response model.About:
This article is published in Journal of Invertebrate Pathology.The article was published on 1978-01-01. It has received 6 citations till now. The article focuses on the topics: Bacillus thuringiensis & Schizura concinna.read more
Citations
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Journal ArticleDOI
Epizootiological Models of Insect Diseases
David W. Onstad,R. I. Carruthers +1 more
TL;DR: Le lien entre les modeles epizootiologiques et les etudes empiriques est discute pour apporter de nouveaux apercus sur the dynamique des populations d'hote and de pathogene.
Journal ArticleDOI
Field persistence of Bacillus thuringiensis on maize leaves (Zea mays L.)
TL;DR: The aim of this research was to study the relationship between viability loss of Bt spores on maize leaves and their concentration, comparing it with field persistence, and to determine the effective doses according to concentrations.
Journal ArticleDOI
Entomopathogenic viruses: strategies for use in forest insect pest management
TL;DR: It is concluded that baculoviruses have considerable potential as components of integrated forest insect pest management systems and will probably be realized when used as an indirect, or preventative, strategy with a view to preventing the occurrence of pest emergency situations.
Journal ArticleDOI
The application of a model to achieve predicted mortality in a field trial using Bacillus thuringiensis to control Heliothis punctiger
TL;DR: Large larvae appeared to be suppressed to the same extent as younger instars when tested against larvae of Heliothis punctiger Wallengren on seed lucerne in a 4 × 4 latin square field trial.
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Pathophysiological influences of the Heterorhabditis bacteriophora complex on fifth-instar larvae of the red humped caterpillar, Schizura concinna: Changes in feeding rate, larval weight, and frass production
TL;DR: At 28.5°C, oral dosages of the invasive juveniles of Heterorhabditis bacteriophora and intrahemocoelic injections of its associated bacterium resulted in a decrease in larval feeding rate, larval wet weight, and frass production in its host, the seventh-instar larvae of Schizura concinna.
References
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Journal ArticleDOI
The field persistence of Bacillus thuringiensis spores
TL;DR: A method for measuring viable spore counts on leaf surfaces is described and utilized to provide data for estimating the field persistence of four Bacillus thuringiensi formulations.
Journal ArticleDOI
Large Sample Confidence Bands for the Logistic Response Curve and its Inverse
Journal ArticleDOI
The field persistence of Bacillus thuringiensis spores on Cercis occidentalis leaves.
TL;DR: Significant differences were found in both magnitude and pattern of field persistence compared to previously reported measurements of Thuricide 90TS, where leaves of Quercus agrifolia were the substrate, and a log linear pattern of decay of viable spore count was found.
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Effect of tree species on the coverage and field persistence of Bacillus thuringiensis spores.
TL;DR: It appears that the characteristics of the leaves of the treated plants may have an effect on the coverage and field persistence of viable B. thuringiensis spores.
Journal ArticleDOI
Methods for assessing field persistence of Bacillus thuringiensis spores.
TL;DR: Application of the total dose model indicates that for typical field application levels more than 90% of total dose is delivered to the insect population during the first day following application.