The influence of drought stress on the distribution of insects on four groundnut genotypes grown near Hyderabad, India

    Wheatley, A R D and Wightman, J A and Williams, J H and Wheatley, S J (1989) The influence of drought stress on the distribution of insects on four groundnut genotypes grown near Hyderabad, India. Bulletin of Entomological Research, 79 (4). pp. 567-577. ISSN 0007-4853

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    Abstract

    Four groundnut genotypes were grown in a randomized block design across a drought-stress gradient to determine the influence of this factor on insect distribution in the 1985-86 post-rainy season near Hyderabad, in peninsular India. The gelechiid leaf-miner Aproaerema modicella was most abundant on the most stressed plants. The cicadellid Empoasca kerri had the reverse distribution. The thrips Frankliniella schultzei and Scirtothrips dorsalis were at first densest where drought stress was least. Their distribution subsequently became reversed and, as the condition of their hosts worsened, they again became most abundant at the wetter end of the gradient. Bud necrosis disease caused most mortality where drought stress was highest. A subsidiary experiment indicated that the intensity of overhead irrigation did not influence the density of A. modicella. There were marked genotype effects: JL 24 carried the highest density of insects and was most susceptible to bud necrosis disease; NC Ac 343 had the lowest leaf-miner and cicadellid populations. M 13 and ICGS 11 had intermediate characteristics

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Groundnut
    Others > Entomology
    Depositing User: Mr B K Murthy
    Date Deposited: 20 Apr 2013 05:27
    Last Modified: 20 Apr 2013 05:31
    URI: http://oar.icrisat.org/id/eprint/6631
    Official URL: http://dx.doi.org/10.1017/S0007485300018721
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: UNSPECIFIED
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