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Memórias do Instituto Oswaldo Cruz

versión impresa ISSN 0074-0276

Mem. Inst. Oswaldo Cruz v.89 n.2 Rio de Janeiro abr./Jun. 1994 

Thevetia peruviana (Family: Apocynaceae) in the control of slug and snail pestsPanigrahiA.RautS. K. University of Calcutta, Department of Zoology, Ecology and Ethology Laboratory Calcutta India 061994892247250An aqueous extract prepared from Kernels of the fruit of Thevetia peruviana (Pers.) Schumann (Family : Apocynaceae) was found under experimental conditions, to be toxic ti the slug Laevicaulis alte (Férussac) and the snail Achatina fulica Bowdich, the important agrihorticultural pests of Indo-Pacific countries. Concentrations as low as 1% (w/v) killed all the slugs exposed in less than 981.00 (± SD 22.76) min, and 2% of the extract killed 100% of the slugs L. alte and 50%, 50% and 30% of the snail A. fulica in between 92.34 (± SD 6.63) - 321.33 (± SD 4.14) and 271.20 (± SD 17.54) - 298.26 (± SD 16.69) min respectively. The most effective concentration of the extract was 20%; it killed 100% of exposed slugs and snails within a short time (40-50 and 90-1440 min respectively) when the extract was exposed on the soil in experimental trays or when it was applied to potato slices offered as food to the gastropods.Thevetia peruvianafruit kernel extractpest controlslugssnailsFull text available only in PDF format.Texto completo disponível apenas em PDF.