Effect of insecticide-treated potato plants on aphid behavior and potato virus Y acquisition.
Pest Manag Sci
; 71(8): 1106-12, 2015 Aug.
Article
em En
| MEDLINE
| ID: mdl-25159012
ABSTRACT
BACKGROUND:
The objective was to assess the effect of two contact insecticides, lambda-cyhalothrin and flonicamid, and three systemic insecticides, pymetrozine, dimethoate and imidacloprid, on the behavior and potato virus Y (PVY) acquisition of three aphid species, Macrosiphum euphorbiae (Thomas), Rhopalosiphum padi L. and Aphis fabae (Scopoli).RESULTS:
At 1-4 days after application, contact insecticides strongly modified aphid behavior and intoxicated them. Dimethoate sprayed on potato plants did not change the behavior of the three tested aphid species, while imidacloprid slightly reduced the probing behavior of M. euphorbiae and intoxicated several R. padi. The residual effect of the insecticides (10-21 days after application) was almost non-existent. No intoxication was found, and only slight changes in the behavior of R. padi and A. fabae were observed. The acquisition of PVY by R. padi was reduced on lambda-cyhalothrin- and dimethoate-treated plants that were sprayed a few days before the test.CONCLUSION:
One systemic and two contact insecticides were effective at intoxicating aphids and reducing probing behavior soon after application. Some insecticides might sporadically reduce the spread of PVY either by modifying the behavior or reducing PVY acquisition, but their action is likely limited to a short period of time after application.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Afídeos
/
Solanum tuberosum
/
Controle de Insetos
/
Potyvirus
/
Inseticidas
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Pest Manag Sci
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
França