Population dynamics and parasitism of Coniesta(= Haimbachia) ignefusalis, Sesamia calamistis, and Heliocheilus albipunctella in millet monoculture

    Youm, O and Gilstrap, F E (1993) Population dynamics and parasitism of Coniesta(= Haimbachia) ignefusalis, Sesamia calamistis, and Heliocheilus albipunctella in millet monoculture. Insect Science and its Application, 14 (4). pp. 419-426. ISSN 0191-9040

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    Abstract

    Studies were conducted in Niger in 1986 and 1987 on the population dynamics and parasitism of the millet stem borer, Coniesta (=Haimbachia) ignefusalis (Hampson) (Lepidoptera:Pyralidae), Sesamia calamistis Hampson, and the millet head caterpillar, Heliocheilus albipunctella de Joannis (Lepidoptera:Noctuidae). Planting dates were assessed for effects on population densities of C. ignefusalis and H. albipunctella. Population densities of C. ignefusalis were not reduced by adjusting millet planting dates, but were affected by millet growth stage. Platytelenomus sp. (Hymenoptera:Scelionidae) was the most common parasite of C. ignefusalis on millet. Parasitism of C. ignefusalis larvae and pupae was rare. Sesamia calamistis was a minor pest of millet in Niger, and was rarely parasitized. Population densities of H. albipunctella were reduced by delaying millet planting dates. Bracon hebetor (Hymenoptera:Braconidae) was the most common parasite of H. albipunctella.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Millets
    Depositing User: Mr Charan Sai Ch
    Date Deposited: 23 Oct 2011 06:31
    Last Modified: 14 Sep 2013 13:29
    URI: http://oar.icrisat.org/id/eprint/3121
    Official URL:
    Projects: UNSPECIFIED
    Funders: United States Agency for International Development-INTSORMIL
    Acknowledgement: Authors thank Drs. Robert Wharton and James B. Woolley and Mr. Greg Zolnerowich at the Department of Entomology, Texas A&M University, and R. W. Carlsonof theTaxonomic Services Unit, USDA, Beltsville MD, for identifying stem borer and head caterpillar parasites. Thanks are also due to the lnstitut National de Recherches Agronomiques du Niger (INRAN) in Niger for providing research facilities. and D.jibo Kondo. Nouhou Kondo and Mamadou Moussa for their technical assistance in the field. Authors also thank anonymous reviewers for their useful comments. This research was supp)rted by the USAID Grant DSANIXIIIC;-0149 through the International SorghumIMillet Collaborative Research Support Program (INTSORMIL) and the Texas Agricultural Experiment Station (?'exasA&M University System). Approved as JAM. 1365hy the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) and TA no. 30824 by the Texas Agricultural Experiment Station.
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