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Research Publication

  • Dodonaea angustifolia - a potential biopesticide against Helicoverpa armigera

    Dodonaea, a common hop bush and a perennial shrub belonging to Sapindaceae is known for its folk remedies. It is distributed from the coast to 2000 m elevated terrain. It is the most aggressive colonizer on disturbed ground, even in rocky gravel or limestone. D. angustifolia L.F., predominantly present in India, has a wide range of therapeutic applications since ancient times against pneumonia and othe pulmonary diseases including tuberculosis. A decoction of the plant or the wood is used as a...

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  • Ovicidal activity of crude extracts of few traditional plants against Helicoverpa armigera (Hubner) (Noctuidae: Lepidoptera)

    Cipadessa baccifera Miq., Melia dubia (Cav.) (Meliaceae); Clausena dentata (Rutaceae) and Dodonaea angustifolia (Sapindaceae) are common medicinal plants found in Western Ghats and are used traditionally for various purposes. The petroleum ether, chloroform, hexane, acetone and water extracts of the leaves were investigated for their ovicidal property against Helicoverpa armigera (Hubner) (Lepidoptera : Noctuidae). The different extracts of the test plants differed significantly in their...

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  • Efficacy of Roccella monatgenei Extracts on Helicoverpa armigera (Lepidoptera: Noctuidae)

    The insecticidal activities of hexane, ethyl acetate, methanol and water extracts of lichen, Roccella montagnei Bel. emend. Awas, were assayed against polyphagous insect, Helicoverpa armigera (Hubner). Among the different crude extracts tested, the popation was nil in methanol (1%)and hexane extract (5%), which was on par with aqueous extract (5%). The formulation of water extract of R. montagnei is better compared to other solvent extracts, as potential antipest agent against H. armigera

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  • Efficacy of Dodonaea angustifolia Crude Extracts against Spotted Bollworm, Earias vitella (Fab.) (Lepidoptera: Noctuidae)

    A field experiment was conducted in Sorapet, Pondicherry, Union Territory, India, to evaluate the efficacy of crude extracts of D. angustifolia against Earias vitella on rainfed cotton D. angustifolia crude extracts drastically reduced the number of larvae similar to aneem product. The percentage of damaged squares and bolls was also reduced after consecutive sprays compared to untreated and endosulfan (controls).

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  • Efficacy of Cipadessa baccifera leaf extracts against gram pod borer, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

    Cipadessa baccifera, a common medicinal plant of Western Ghats was evakyated fir insecticidal property against Helicoverpa armigera. The different extracts of leaves differed significantly in their efficacy with the hexane extract being the most effective in curtailing the fecundity and egg hatchability in the first generation adults. The insecticidal effect against the resultant progeny proved that petroleum ether extract could cause significant reduction in pupation and pupal weight and...

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  • Efficacy of Beauveria bassiana (Balsamo) Against Red Flour Bettle, Tribolium castaneum (HERBST)

    White muscardine fungus, Beauveria bassiana, was evaluated for its insecicidal activity against grubs, pupae and adults of the red flour beetle, Tribolium castaneum. In general, prolongation in grub and pupal duration was observed. As a Subsequent effect, malformed adults were evident. The adult mortality (%) increased with the increase in exposure period and conidia concentration. This proved that the time of dipping and spore concentration greatly influenced the insecticidal effects of the...

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  • Laboratory Efficacy of Lecanicillium lecanii (Zimmermann) Against Different Stages of Helicoverpa armigera and its Biosafety on Trichogramma sp.

    The white halo fungus, Lecanicillium lecanii was evaluated for its insecticidal activity against larvae, pupae and adult stages of the American bollworm, Helicoverpa armigera. In general, the highest concentration of the fungus led to least pupation. The length of larvae and pupae did not vary between the fungal treatments, while the weight showed a significant variation. Prolongation in Larval and pupal duration and as a result, high percentage of malformed adults was noted. Subsequent effect...

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  • Sustainable homestead gardens and resilience: Case study of Milandhoo island of Shaviyani atoll, The Maldives

    Home gardens generally cover small areas near to home but have wider diversity of crop species which are crucial to brining resilence in vulnerable regions by reducing the risks. Apart from this, management of home gardens helps to increase food availability and better nutrition through food diversity, income and rural employment and environmental benefits of recycling water and wastes and provide shade and alter the microclimate around the house. Ingeneral home garden is defined as "a small...

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  • The role of Bioeconomy in a changing world: Fostering partnerships for a better future

    The world is suffering from serious societal, economic and environmental challenges including climate change, resource scarcity, demographic changes, food, energy and water insecurity and migration. We need a paradigm shift in the way we use our resources optimally in the future, and the way we address these challenges. Bioeconomy is one such approach that could provide a sustainable way to go ahead. Bioeconomy comprises those parts of the economy that use renewable biological resources from...

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  • Gendered adaptation to climate change in canal irrigated agro-ecosystems

    Agriculture in India is the major source of livelihood to 70 percent of the rural population, but its contribution to the Gross Domestic Product is only 14 percent. Indian agriculture is characterized largely by small holdings. According to the Agricultural Census (Ministry of Agriculture, 2010-11), nearly 85 percent of the farmers are smallholders (below 2 ha) operating 45 percent of the total cultivated area. Overall, women play an important role in agriculture in India and particularly on...

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