Laboratory experiments on the evaluation of infectivity of Beauveria bassiana (Bals.) Vuill. to tobacco caterpillar Spodoptera litura Fab. as influenced by two okra varieties. Infectivity of B. bassiana at three concentrations viz. 0.1, 1.0 and 3.0 per cent was evaluated by contaminated food bioassay method. In comparison, topical bioassay method was also made. Statistically significant variati...

A series of novel β-carboline 1,3,4-oxadiazole derivatives were designed and synthesized, and the in vitro cytotoxic activity against Sf9 cells and growth inhibitory activity against Spodoptera litura were evaluated. Bioassay results showed that most of these compounds exhibited excellent in vitro cytotoxic activity. Especially, compound 37 displayed the best efficacy in vitro (IC50 = 3.93 μM),...

The present study aimed to find the toxicity of aqueous and methanol extracts three different brown macroalgae viz., Padina tetrastromatica, Sargassum wightii Turbinaria conoides against tobacco cutworm, Spodoptera litura. Larval mortality was noticed in both at all concentrations tested a dose-dependent increase after 96 h exposure with 73.33, 56.66, 50.00 per cent extract; 50.00, 46.66 43.33 ...

To enhance the field persistency of S. litura nuclear polyhedrosis virus (SLNPV), three chemicals viz. cupric ammonium nitrate, tinopal and cupric sulphate were tried as protectants (0.01 mg/ml) against natural sunlight (UV) irradiation. On exposure for 8 hr and subsequent bioassaying (diet surface treatment), it was found that cupric sulphate protected the polyhedrosis inclusion bodies (PIBs),...

Tanaman Waru (Hibiscus tiliaceus) merupakan salah satu tumbuhan yang memiliki kandungan senyawa aktif saponin, alkaloid, dan flavonoid dapat dimanfaatkan sebagai bioinsektisida. Biopestisida pestisida berasal dari makhluk hidup organik kemampuan untuk menghambat atau membunuh hama tanaman. pakcoy tanaman mudah terserang oleh hama, sehingga di Indonesia mengalami penurunan jumlah produksi. Ulat ...

Reverse transcription quantitative polymerase chain reaction (qRT-PCR) has rapidly become the most sensitive and accurate method for the quantification of gene expression. To facilitate gene expression studies and obtain more accurate qRT-PCR data, normalization relative to stable housekeeping genes is required. These housekeeping genes need to show stable expression under the given experimenta...

Bacillus thuringiensis (Bt) being an eco-friendly bioinsecticide is effectively used in pest management strategies and, therefore, isolation and identification of new strains effective against a broad range of target pests is important. In the present study, new indigenous B. thuringiensis strains were isolated and investigated so that these could be used as an alternative and/or support the cu...

Predicted increase in temperature and atmospheric CO2 concentration will influence the growth of crop plants and phytophagous insects. The present study, conducted at the Central Research Institute for Dryland Agriculture, Hyderabad, India, aimed at (1) construction of life tables at six constant temperatures viz., 20, 25, 27, 30, 33, and 35 ± 0.5 °C for Spodoptera litura (Fabricius) (Noctuidae...

A field survey in the farmers’ fields at Gurugram Haryana, few blocks focused on incidence of pests cabbage and cauliflower during rabi, 2017-18 2018-19. These revealed occurrence Plutella xylostella Spodoptera litura. Maximum number larvae P. S. litura was recorded Pataudi block as compared to those Farukhnagar, Sohana Gurugram. Seven neem-based biopesticides were evaluated along with check ca...

The present study features the estimation of number of generations of tobacco caterpillar, Spodoptera litura. Fab. on peanut crop at six locations in India using MarkSim, which provides General Circulation Model (GCM) of future data on daily maximum (T.max), minimum (T.min) air temperatures from six models viz., BCCR-BCM2.0, CNRM-CM3, CSIRO-Mk3.5, ECHams5, INCM-CM3.0 and MIROC3.2 along with an ...