EFFECT OF CONCENTRATIONS AND DOSE ON ATTRACTION AND REPELLENT PERCENTAGE OF WATER EXTRACTS OF SOME PLANTS IN LARVAE OF Plodia interpunctella (Hubn.)
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 3, Pages 296-306
AbstractThe results of studying the effect of 1. 4. 7 and 9 % concentrations and 0.1 . 0.3 mL dose of water extracts of Myrtus communis L. Ruta graveolens and Mentha piperita L. on mortality. attraction and repellent to larvae of Plodia interpunctella (Hubn.). showed a different variation in mortality. attraction and repellent percentage to the larvae according to the kind of extracts. concentrations and doses. The concentration 9 % of R. graveolens showed a highest mean mortality reached 74 %. and the relative toxicity reached 0.63 . 0.71 and 1.0 for M. communis . R. graveolens and M. piperita respectively and the relative efficieny values reched 157.44% for R. graveolens. 100% for M. communis and 132.14% for M. piperita. The results also revealed that the highest mean of attraction reached 46.67 by M. piperita at 1% concentration and 0.1 ml dose one hour after treatment followed by M. communis extracts which reached 46.67% at 9% concentration and 0.1 ml one hour after treatment. the M. piperita extracts produce a supreme repllent effect reached 36.67% at 9% concentration and 0.1 ml Dose one hour after treatment statistical analysis results showed a significant variation in balance values according to the extract concentrations. doses and time from treatment.
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