Evaluation of aqueous plant extracts on Spodoptera eridania
(Cramer) (Lepidoptera: Noctuidae)
Jucelaine Haas, Salete V. K. Morcelli, Kimyio S. Haida, Ely
Pires, Bruna C. Garcia, Luis F. A. Alves
Abstract
Spodoptera eridania
(Cramer) is a polyphagous species that feeds on several crops, causing
major damage. However, its control is difficult. Then, the aim of this
study was to evaluate the effect of aqueous extract of Capsicum baccatum
L., Eucalyptus grandis
(Hill) and Cymbopogon
winterianus Jowitt on the development of S. eridania when
incorporated in artificial diet. The aqueous extract (10% w/v) were
incorporated into the diet and offered to the caterpillars. To the
control group was offered only diet. The experimental design was
completely randomized, and each treatment consisted of 4 replicates
with 15 larvae per replicate. The larval mortality, the weight of
larvae and pupae, and larval duration were evaluated. E. grandis
presented the higher efficiency upon S. eridania,
causing 100% of mortality and the lowest larval weight
(1.0±0.3 mg), followed by C. baccatum, which
caused 61.7% of mortality, reduced larval (21.1±2.3 mg) and
pupal weight (197.0±5.7 mg), when compared to the control
group: 24.9% of mortality, larval (57.5±4.9 mg) and pupal
wieght (253.4±5.5 mg). These results indicate that both
plants affect the development of S.
eridania and are potential options to control this insect.
Key
words
- Cymbopogon
winterianus, Capsicum baccatum, Eucalyptus grandis,
insecticide plant.
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