Synergistic effect of Eugenia jambolana Linn. and Solidago canadensis Linn. leaf extracts with deltamethrin against the dengue vector Aedes aegypti Linn. at Mysore
Autor(es): Raghavendra, B. S.; Prathibha, K. P.; Vijayan, V. A.
Resumo: With the goal in mind to minimize the application of environmentally hazardous chemical insecticides, the larvicidal activity of two plant extracts along with deltamethrin was studied at University of Mysore. The extracts of Solidago canadensis and Eugenia jambolana were employed for working out the synergistic efficacy against Aedes aegypti larvae, as the extracts of both the plants exhibited high efficacy when applied individually. The deltamethrin when analyzed separately, LC sub(50) and LC sub(90) values were 0.00045 and 0.00148 ppm, respectively. Synergistic studies with two plant extracts on deltamethrin revealed S. canadensis as more effective with synergistic factor(SF) of 4.090 for LC sub(50) value and 4.781 for LC sub(90) followed by E. jambolana with SF 1.80 for LC sub(50) and 2.467 for LC sub(90) at 1:1 ratio of the phytoextracts and deltamethrin. Thus, S. canadensis was found to be a better larvicidal and synergistic agent. Combination of phytochemical and insecticide were found to be more effective than insecticides or phytochemicals alone which could be a good ecofriendly and cost-effective approach to reduce the dose of chemicals with high residual effect to be applied in vector control programs.
Palavras-Chave: Pesticides; Pest control; Toxicity tests; Mortality causes; Dengue; Residual effects; Pollution research; Plant extracts; Deltamethrin; Synergistic effects; Phytoremediation; Economics; Aedes aegypti; Solidago canadensis
Imprenta: Environmental Science and Pollution Research International, v. 20, n. 6, p. 3830-3835, 2013.
Descritores: Aedes aegypti - Dengue
Data de publicação: 2013
