Short Communication

Efficacy of certain plant extracts against seed-borne infection of Collectotrichum destructivum on cowpea (Vigna uniguculata)

Akinbode O. A.¹ and Ikotun T.²

¹Institute of Agricultural Research and Training, IAR and T, Ibadan, Nigeria.

²Department of Crop Protection and Environmental Biology, University of Ibadan, Nigeria.

*Corresponding author. E-mail: foyedeji@yahoo.com.

Accepted 15 August, 2008

Aqueous extracts of leaves of Moringa oleifera Lam, Vernonia amygdalina and Annona muricata were evaluated for the control of Collectotrichum destructivum on seeds of cowpea (Vigna uniguculata). The seeds were soaked in sterile distilled water extract (10, 20 and 30%, w/v) of the leaves for 6, 12 and 18 h. All these plant extracts had significant inhibitory growth effect on the fungal pathogen. M. oleifera extract was more effective than other plant extracts and compared favorably with benomyl in the control of the pathogen.

Key words: Benomyl, Collectotrichum destructivum, leaves extracts, Vigna uniguculata.