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Using aerated compost tea in comparison with a chemical pesticide for controlling rose powdery mildew

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Rose powdery mildew (Sphaerotheca pannosa var. rosae) is one of the most common foliar diseases of roses worldwide. Application of chemical products on the plant or in the soil kills a range of the beneficial micro-organisms thereby disturbing ecosystem. Compost tea helps to restore and increase the populations of those beneficial micro-organisms. The objective of the present study was to evaluate the comparison of biopesticide (compost tea) and a chemical pesticide. The experiment was performed in three treatments, which were compost tea, fungicide (Topaz) and no treatment in three replications. After foliar applications of biopesticide and fungicide, the control percentage was estimated based on the number of infected flowers with powdery mildew. The results indicated that there was a significant difference between these treatments on rose in controlling powdery mildew (F = 23.25, p = 0.0015, df = 2), at a probability level of 1% (p  0.01). So, that control percentage of compost tea treatment was the most.
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Keywords: Sphaerotheca pannosa; Topaz; compost tea; design-expert; powdery mildew

Document Type: Research Article

Affiliations: 1: Department of Plant Protection, Varamin-Pishva Branch, Islamic Azad University, Varamin, Iran. 2: Young Researchers Club, Islamic Azad University, Gorgan, Iran. 3: Iranian Research Organization Science and Technology (IROST), Tehran, Iran. 4: Keshtzare Tabarestan Plant Protection Clinic, Babol, Iran.

Publication date: April 3, 2014

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