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Details van artikel 9 van 16 gevonden artikelen
| Titel: |
Field Treatment of Desert Locust ( Schistocerca gregaria Forskal) Hoppers in Mauritania Using an Oil Formulation of the Entomopathogenic Fungus Metarhizium flavoviride |
| Auteur: |
Langewald, J. Kooyman, C. Douro-Kpindou, O. Lomer, C. J. Dahmoud, A. O. Mohamed, H. O. |
| Verschenen in: |
Biocontrol science and technology |
| Paginering: | Jaargang 7 (1997) nr. 4 pagina's 603-612 |
| Jaar: |
1997-12-01 |
| Inhoud: |
A field trial was conducted to test the efficacy of an oil formulation of the entomopathogenic fungus , Metarhizium flavoviride Gams & Rozsypal (Deuteromycotina: Hyphomycetes) , as a control agent for the desert locust , Schistocerca gregaria Forskal (Orthoptera: Acrididae) , in Mauritania . The treatment was applied to hopper bands in the field . In caged samples of the treated insects , 99% mortality was observed in 15 days . On average during application only 51% of the hoppers received spray droplets directly , the additional mortality being due to pick - up of spores from the spray residue . This mortality was assessed by exposing insects to a treated plot at intervals , and monitoring disease levels during subsequent incubation in cages . The spray residue remained highly infective for a period of 6 days after application . The number of nymphs in the hopper bands was estimated using a computer - based photographic image - processing technique . Unfortunately , most of the hopper bands dispersed into small groups , but a population reduction could be demonstrated for one hopper band . Maximal daily mortality in the field was observed 10 - 11 days after application , compared with 6 - 10 days in cages . |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 9 van 16 gevonden artikelen
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