SciELO - Scientific Electronic Library Online

 
vol.33 número4Invertebrados de pozas efímeras de la vega Tambo-Puquíos (Andes del norte-centro de Chile) y las características fisicoquímicas de su hábitatEvaluación de polvos de zanahoria obtenidos por deshidratación por aire forzado a diferentes temperaturas índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • No hay articulos similaresSimilares en SciELO
  • En proceso de indezaciónSimilares en Google

Compartir


Idesia (Arica)

versión On-line ISSN 0718-3429

Resumen

RODRIGUES, Nara Elisa Lobato et al. Effects of cowpea cultivars and neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer) (Lepidoptera: Noctuidae). Idesia [online]. 2015, vol.33, n.4, pp.65-74. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292015000400009.

The southern armyworm Spodoptera eridania is a polyphagous species that can feed on cowpea plants. Although there is some knowledge about the resistance of cowpea cultivars, little is known on the effects of neem oil to control pest insects of cowpea in Brazil. This study aimed to evaluate the effects of cowpea cultivars combined with neem oil on attractiveness, feeding, and development of Spodoptera eridania (Cramer). The experiment was carried out under environmentally controlled conditions, and set up in a 6 x 3 factorial arrangement using six cowpea cultivars and two doses of neem oil plus the control (deionized water). Free-choice and no-choice feeding preference assays were performed to assess treatment attractiveness to the larvae and leaf consumption. Duration and survival of larvae, pre-pupae, and pupae, weights of larvae and pupae, longevity of adults, sex ratio, duration of larva-to-adult period, and larval mortality after 3, 6, 12, and 24 days were recorded. Cultivars BRS Urubuquara and BR17 Gurgueia were the least consumed in the free-choice test. Neem oil at 0.35 and 0.7% reduced leaf consumption. Cultivars BRS Novaera and BR17 Gurgueia showed to be the least suitable for S. eridania development. Neem oil at both doses affected S. eridania development. Cultivars BR7 Gurgueia and BRS Novaera were moderately resistant; BR3 Tracuateua, susceptible; and Sempre Verde, Milênio, and BRS Urubuquara were highly susceptible to S. eridania.

Palabras clave : Vigna unguiculata; Azadirachta indica; southern armyworm; host plant resistance; natural product.

        · resumen en Español     · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons