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Research Article

Integrated Biological and Chemical Control of Powdery Mildew of Barley Caused by Blumeria graminis F.sp. Hordei Using Rhizobacteria and Triadimenol

Fahri Yigit and Ahmet Zeybek
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In this study, ability of triadimenol and rhizobacteria to control the powdery mildew of barley caused by Blumeria graminis f.sp. hordei were investigated in field conditions on eight barley cultivars with different resistance genes. The pathogen fungus was isolated from the diseased plants in fields. Rhizobacteria were isolated from the healthy barley plants via dilution method and applied to seeds and leaf surface when plants were in the first or second leaf stage. Application of rhizobacteria alone gave the best control in Bornova-92, Yercil and Yildirim cultivars by 26.96, 13.92 and 17.65%, respectively. Triadimenol and rhizobacteria combination controlled the disease by 60.31-72.89% while triadimenol alone prevented the disease by 58.25-65.34%. Protection in both treatments showed variation in tested cultivars (p<0.05). Disease index was found lower in barley cultivars with more than one resistance genes.

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  How to cite this article:

Fahri Yigit and Ahmet Zeybek , 2004. Integrated Biological and Chemical Control of Powdery Mildew of Barley Caused by Blumeria graminis F.sp. Hordei Using Rhizobacteria and Triadimenol. Pakistan Journal of Biological Sciences, 7: 1671-1675.

DOI: 10.3923/pjbs.2004.1671.1675


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