Incidence and distribution in sorghum of the spotted stem borer Chilo partellus and associated natural enemies in farmers’ fields in Andhra Pradesh and Maharashtra states

    Duale, A H and Nwanze, K F (1999) Incidence and distribution in sorghum of the spotted stem borer Chilo partellus and associated natural enemies in farmers’ fields in Andhra Pradesh and Maharashtra states. International Journal of Pest Management, 45 (1). pp. 3-7. ISSN 0967-0874

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    Abstract

    A series of surveys was carried out in farmers’ fields in two major sorghum-growing states of India (Maharashtra and Andhra Pradesh) during the 1994 and 1995 cropping seasons to determine distribution, abundance, and economic importance of the spotted stem borer Chilo partellus Swinhoe and associated parasitoids in sorghum. Stem borer incidence and distribution varied significantly between the two states. In Maharashtra, the highest incidence was recorded in Amravati district (40%), followed by Yavatmal (39%). In Andhra Pradesh, the highest incidence and damage were recorded from Medak (31%), followed byMahbubnagar (30.3%). The natural enemies recorded in the survey included three larval parasitoids, viz. Cotesia ruficrus (Haliday) and C. flavipes Cameron, and Sturmiopsis inferens Townsend and one pupal parasitoid Xanthopimpla stemmator Thunberg. While species composition did not vary between the two states, species predominance varied considerably, such that Cotesia spp. were predominant in Maharashtra, and S. inferens in Andhra Pradesh.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Subjects: Mandate crops > Sorghum
    Depositing User: Library ICRISAT
    Date Deposited: 20 Oct 2011 06:34
    Last Modified: 20 Oct 2011 06:35
    URI: http://oar.icrisat.org/id/eprint/2998
    Official URL: http://dx.doi.org/10.1080/096708799227978
    Projects: UNSPECIFIED
    Funders: UNSPECIFIED
    Acknowledgement: We thank K. Hareendranath and J. Raja Rao for their technical assistance in the field. This paper was approved asJournal article No. 1920 by the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT).
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