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SESSION 6: FUTURE CHALLENGE FOR EUROPE AND WORLDWIDE
P136 - Combating of Fusarium oxysporum f. sp.
albedinis attacking date palm in the south west of
Algeria by natural substances
N. Nahal Bouderba, H. Kadi, S. Moghtet, B. Meddah, A. Moussaoui
Laboratory of Plant Resource Development and food Security in Semi-Arid Areas, South West of
Algeria, BP417, University of Béchar, Algeria
E-mail: Norabechar@yahoo.fr
Bayoud disease, a vascular disease of date palm (Phoenix dactylifera L.) is
caused by a telluric fungus Fusarium oxysporum f. sp. albedinis (Foa). It
represents the most serious problem for date palm cultivation particularly in North
Africa. Bayoud has destroyed more than two thirds of date palm groves in
Morocco and is now spreading through the west and center of Algeria.
The aim of this work is to study the effect of natural substances of Citrullus
colocynthis fruits against Fusarium oxysporum fs albidinus isolated from date
palm grove of Beni Abes.
Three extracts were prepared from dried bark and pulp of gourds, a maceration of
24 hours and a decoction of 1 hour in distilled water and a methanolic extract.
The evaluation of the radial growth on solid medium and evaluation of fungal
biomass on liquid medium are the techniques used in this study; the percentages
of inhibition of this Phytopathological strain are 100%; 93.58% and 84.61%
respectively for the aqueous macerate the aqueous extract and methanolic
extract.
Keywords: Fusarium oxysporum f.s albidinus, Bayoud, natural substances,
Phoenix dactylifera L, percentages of inhibition
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