| Registro completo |
| Provedor de dados: |
Anais da SEB
|
| País: |
Brazil
|
| Título: |
Application rate trials with a nuclear polyhedrosis virus to control Spodoptera frugiperda (Smith) on maize
|
| Autores: |
Cruz,Ivan
Figueiredo,Maria L. C.
Valicente,Fernando H.
Oliveira,António C.
|
| Data: |
1997-04-01
|
| Ano: |
1997
|
| Palavras-chave: |
Insecta
Fall armyworm
Baculovirus
Biological control
|
| Resumo: |
Different concentrations of nuclear polyhedrosis virus were applied as aqueous suspensions using a tractor mounted or a backpack-manual sprayer to control Spodoptera frugiperda (Smith) larvae on maize (Zea mays L.). Larval mortality varied with the application equipment. For the tractor-mounted sprayer application of at least 2.5 x 10(12) P.I.B./ha was necessary to attain a control comparable to that obtained with the backpack-manual sprayer application (70.2%). For this application method it can be used the dose of 2.5 x 10(11) PI.B./ ha, butNPV persistence was very short. A greaterNPV persistence was obtained with doses over 1.25 x 10(12) P.I.B./ha (93.4% mortality). The occurrence of parasitoids in the experimental area increased larval mortality rate (16.4%), independent of the application method. Among the parasitoids, the most prevalent was Campoletis flavicincta (Ashmead) (53.0%), followed by Chelonus insularis (Cresson) (31.3%), and Eiphosoma spp. (15.6%).
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000100019
|
| Editor: |
Sociedade Entomológica do Brasil
|
| Relação: |
10.1590/S0301-80591997000100019
|
| Formato: |
text/html
|
| Fonte: |
Anais da Sociedade Entomológica do Brasil v.26 n.1 1997
|
| Direitos: |
info:eu-repo/semantics/openAccess
|
