Fusarium wilt caused by Fusarium oxysporum f. sp. lycopersici is an important disease of tomato in the Nigeria savanna, The control have been achieved through synthetic chemicals. This study reports on the in vitro antifungal activity of two varieties (red and white) of Curcuma longa (L) rhizome extracts on fusarium wilt pathogen (Fusarium oxysporium f.sp. Lycopersici). Irrespective of the variety and the solvent of extraction the highest inhibitory activity was recorded at higher concentrations (10- 15%) while the least inhibiton 57.8% was recorded on the control (0%). Analysis of variance results on mycelial growth in different concentrations showed that the extracts were significant in reducing the mycelial growth of Fusarium wilt pathogen of tomato. These plant material may therefore contribute to development of potentially effective lid environmentally safer alternative fungicide to control fusarium wilt pathogen of tomato.
Tomato, Fusarium wilt,pathogen,rhizome,