Efficacy Of Jatropha gossypifolia And Manihot esculenta Seed Extract For The Control Of Sclerotium rolfsii And Fusarium oxysporum In South-Western Nigeria

Abstract

The efficacy of physic nut (Jatropha gossypifolia linn) and cassava (Manihot esculenta crantz) seed extracts in controlling Sclerotium rolfsii sacc and Fusarium oxysporum schlect was evaluated in a laboratory study. The oil extracts were applied at four concentrations 0,10,100,1000 ppm to cultures of S. rolfsii and F. oxysporium isolates from tomato and cowpea respectively. There were significant differences (P<0.05) in the growth radii of the fungus among the various concentrations and 1000pm of J. gossypifolia was most effective in reducing the growth radii of the fungal pathogens.

Keywords: Seed extract, fungal pathogens, growth radii.

Journal of Agriculture, Forestry and the Social Sciences Vol. 4 (2) 2006: pp. 79-82