Bioefficacy ofBlumea mollis(D. Don) Merr. andHygrophila schulii(Buch.-Ham.) (Syn.H. auriculata) againstHelicoverpa armigera(Hübner)
| Autor: | Anbalagan Santhosh Kumar, Savarimuthu Ignacimuthu, Kathirvelu Baskar, Gnanaprakasam Antony Raj, Soosaimanickam Maria Packiam |
|---|---|
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Archives Of Phytopathology And Plant Protection. 48:400-411 |
| ISSN: | 1477-2906 0323-5408 |
| Popis: | Indiscriminate use of synthetic pesticides to control the pests causes negative effects on non-target organisms. Some of the chemicals under B and C categories are carcinogenic to humans. The present study was aimed to assess the antifeedant, larvicidal and pupicidal activities of Hygrophila schulii (syn. H. auriculata) and Blumea mollis against Helicoverpa armigera. Maximum antifeedant activity of 70.01% was observed in ethyl acetate extract of H. schulii at 5.0% concentration with LC50 value of 2.0%. B. mollis ethyl acetate extract at 5.0% concentration showed antifeedant activity of 35.40% with LC50 value of 8.38%. The data for antifeedant activity showed homogeneity of variances in Levene Statistics and normality in Shapiro–Wilk test. Ethyl acetate extract of H. schulii at 5.0% concentration showed 68.66% larvicidal activity with LC50 value of 2.97%. It also showed 73.33% pupicidal activity and was statistically significant from other treatments. No pupicidal activity was observed in ethyl acetate ext... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|