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Titolo:
Field assessment of Beauveria bassiana (Balsamo) vuillemin and potential synergism with diflubenzuron for control of savanna grasshopper complex (Orthoptera) in Mali
Autore:
Delgado, FX; Britton, JH; Onsager, JA; Swearingen, W;
Indirizzi:
Montana State Univ, Dept Entomol, Bozeman, MT 59717 USA Montana State Univ Bozeman MT USA 59717 pt Entomol, Bozeman, MT 59717 USA Mycotech Corp, Butte, MT 59701 USA Mycotech Corp Butte MT USA 59701Mycotech Corp, Butte, MT 59701 USA USDA ARS, Sidney, MT 59270 USA USDA ARS Sidney MT USA 59270USDA ARS, Sidney, MT 59270 USA
Titolo Testata:
JOURNAL OF INVERTEBRATE PATHOLOGY
fascicolo: 1, volume: 73, anno: 1999,
pagine: 34 - 39
SICI:
0022-2011(199901)73:1<34:FAOBB(>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
METARHIZIUM-FLAVOVIRIDE; RANGELAND GRASSHOPPERS; COMBINATIONS; TEMPERATURE; COLEOPTERA; ANISOPLIAE; PATHOGEN;
Keywords:
Beauveria bassiana; grasshoppers; diflubenzuron; fenitrothion; survival rate; synergist; pathogens;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Delgado, FX Montana State Univ, Dept Entomol, Bozeman, MT 59717 USA Montana State Univ Bozeman MT USA 59717 Bozeman, MT 59717 USA
Citazione:
F.X. Delgado et al., "Field assessment of Beauveria bassiana (Balsamo) vuillemin and potential synergism with diflubenzuron for control of savanna grasshopper complex (Orthoptera) in Mali", J INVER PAT, 73(1), 1999, pp. 34-39

Abstract

In large-scale held trials in Mall, formulated conidia of Beauveria bassiana (Balsamo) Vuillemin strain GHA were tested against unconfined grasshopper populations in held plots of 10 ha each. The trials compared B. bassiana conidia formulated in a mineral oil, carrier formulated diflubenzuron, a combination of B. bassiana plus formulated diflubenzuron, and fenitrothion. Atotal of 30 different species of grasshoppers occurred in the experimentalplots, of which 3 were dominant in all plots, namely Cryptocatantops haemorrhoidalis (Krauss), Acrotylus blondeli (Saussure), and Hieroglyphus daganensis (Krauss). The density of grasshopper populations in the plots was determined by the number of grasshoppers counted in 0.1-m(2) rings laid out in repeated transects. All treatments significantly reduced the grasshopper densities in the experimental plots compared to the untreated controls. After14 days posttreatment the grasshopper populations decreased by 38.1% in plots treated with B. bassiana done, 29.4% in plots treated with diflubenzuron alone, and 55.6% in plots treated with the B. bassiana plus diflubenzuron. Effects of the diflubenzuron-B. bassiana mixture were additive and not synergistic. In the fenitrothion plots, after a drop of 95.5% within the first 48 h after the treatment, the grasshopper population steadily increased at a rate of 12.4% per day for the remainder of the 14-day period, whereas densities in the other treated plots continued to decrease. These trials suggest that B. bassiana, with or without a diflubenzuron additive, exerts a continuous effect over a prolonged period. (C) 1999 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/01/20 alle ore 14:02:40