S.T. Arannilewa  , 
    A Simple Laboratory Prescreen for Plants with Grain Protectant Effects Against the
Maize Weevil; <I>Sitophilus zeamais </I> (Mots) (Coleoptera: Curculionidae),
    Agricultural Journal,
    Volume 2,Issue 6,
    2007,
    Pages 736-739,
    ISSN 1816-9155,
    aj.2007.736.739,
    (https://makhillpublications.co/view-article.php?doi=aj.2007.736.739)
    Abstract: A simple bioassay technique to assess pulverized indigenous plant materials for ability to protect maize grains from damage by weevils during storage, was employed.  Of the 9 plants that were screened, <I> Zanthoxylum xanthoxyloides </I> (Lam.) Waterm. (Rutaceae), <I> Aristolochia ringens</I> Vahl. (Aristolochiaceae) and <I> Morinda lucida</I> Linn. (Rubiaceae) showed best protectant effects on adult toxicity, adult emergence and Weevil Perforation Index (WPI). The details of the bioassay procedure used and the results obtained are reported.
    Keywords: Pulverized plants;mortality;Zanthoxylum xanthoxyloides;Aristolochia ringens;Sitophilus zeamais;weevil perforation index