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| FARIA, M.R. de; MAGALHÃES, B.P.; ALVES, R.T.; SCHMIDT, F.G.V.; SILVA, J.B.T. da; FRAZÃO, H.. |
| The fungus Metarhizium anisopliae var. acridum, strain CG 423, was tested under field conditions against the gregarious grasshopper Rhammatocerus schistocercoides (Rehn) (Orthoptera: Acrididae). Conidia formulated in a racemic mixture of soybean oil and kerosene were sprayed under field conditions using an ultralow-volume hand-held atomizer Ulva Plus adjusted to deliver 2.9 L/ha. Bands composed of 2nd instar nymphs were treated with either 5.0x1012 or 1.0x1013 viable conidia/ha. The number of insects in each band was estimated at day one following spraying and by the end of the field trial (15 to 16 days post-treatment). Reductions in population size reached, in average, 65.8% and 80.4% for bands treated with the higher and lower dosage, respectively. For... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Biological control; Microbial pesticide; Entomogenous fungus; Grasshopper; Oil formulation; Controle biológico; Pesticida microbiano; Fungo entomopatogênico; Gafanhoto; Formulação oleosa. |
| Ano: 2002 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/108797 |
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