Etude des effets biocides des extraits de trois plantes spontanées récoltées dans la région de Ghardaïa au Sahara Algérien
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Date
2019
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Faculté Science de la Nature et de la Vie et Sciences de la Terre - Université de Ghardaïa
Abstract
The aim of this work is to verify the biocidal efficacy of plant extracts of three Saharan plants,
namely Pergularia tomentosa L. (Asclepiadaceae); Euphorbia guyoniana Boiss. & Reut.
(Euphorbiaceae) and Asphodelus tenuifolius Cav. (Asphodelaceae) on Meloidogyne spp.
Nematodes and black aphid Aphis fabae L. (Homoptera-Aphididae). These extracts gave very
satisfactory results. We reported very high mortality rates after 45 days of application of extracts
for nematicidal effects; the gall index according to Taylor and Sasser equals 3 on the scale for the
extract of Pergularia tomentosa L and the mixture of Pergularia + Asphodelus. The results
obtained for the insecticidal effect during which mortality rates vary between 81.45% and 97.03%
are reported
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Keywords
Pergularia tomentosa, Euphorbia guyoniana, Asphodelus tenuifolius, nématicide, Aphicides, extract, Pergularia tomentosa, Euphorbia guyoniana, Asphodelus tenuifolius , nématicide, Aphicides, extrait