Biological Control of Fusarium Wilt in Tomato by Plant Growth-Promoting Yeasts and Rhizobacteria

Elyousr, Kamal A. M. Abo; Mohamed, Hashem M.

The Plant Pathology Journal 2009;25(2):199-204.
Published online June 30, 2009.

Biological Control of Fusarium Wilt in Tomato by Plant Growth-Promoting Yeasts and Rhizobacteria

Kamal A. M. Abo Elyousr, Hashem M. Mohamed

Abstract

Three plant growth-promoting yeasts and two rhizobacteria were tested for controlling tomato wilt caused by Fusarium oxysporum f. sp. lycopersici under greenhouse and field conditions. Under greenhouse and field conditions, all treatments were significantly reduced disease severity of tomato wilt relative to the infected control. The highest disease reductions in pots (75.0, 67.4%) and field (52.5, 42.4%) were achieved by Azospirillum brasilense and Bacillus subtilis compared to infected control. Under field condition all treatments produced the highest tomato yield compared to the control plants inoculated with the pathogen.

Key Words: Azospirillum brasilense, Bacillus subtilis, biocontrol, Candida sake, Pichia membranifaciens, tomato wilt

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