Volume 8 | Issue - 8
Volume 8 | Issue - 8
Volume 8 | Issue - 8
Volume 8 | Issue - 7
Volume 8 | Issue - 7
Cabbage, like all other vegetable crops, is generally attacked by a number of pests. These pests are often controlled by synthetic chemical insecticides, which are a real danger to human health and the environment. Thus, this study is part of the search for alternatives based on plant extracts. In the present study, phytochemical dosages of aqueous and ethanolic extracts of Indian verbena were carried out, with determination of their larvicidal efficacy on Hellula undalis and Plutella xylostella. Phytochemical characterization revealed the presence of gallic tannins and saponins in the two extracts analyzed. Flavonoid content was 0.042 ± 0.016 mg/g in the aqueous extract and 0.050 ± 0.001 mg/g in the ethanolic extract. Total phenol levels were 0.046 ± 0.110 and 0.052 ± 0.110 mg/g for aqueous and ethanolic extracts respectively. Larvicidal tests revealed higher mortality rates for both extracts on H. undalis than on P. xylostella at all concentrations. LC50 calculations showed a higher toxicity of the ethanolic extract on H. undalis (34.33±0.022 mg/ml) and P. xylostella (49.74±0.056 mg/ml) than the aqueous extract (42.49±0.01 mg/ml on H. undalis and 53.98±0.00 mg/ml on P. xylostella). This study revealed the larvicidal activity of Indian verbena extracts on H. undalis and P. xylostella.