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Preparation of new biofungicides using antagonistic bacteria and mineral compounds for controlling cotton seedling damping-off disease

Publish Year: 1389
Type: Conference paper
Language: English
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CEE04_700

Index date: 26 May 2010

Preparation of new biofungicides using antagonistic bacteria and mineral compounds for controlling cotton seedling damping-off disease abstract

The overuse of chemical pesticides in agriculture has caused serious environmental problems and thus the demand for safer pesticides is increasing. One alternative is microbial pesticides that suppress plant pathogens via their microbial activities. As microbial pesticides are eco-friendly products, in this study we prepared four biological fungicides using two isolates of Pseudomonas fluorescens that included a talc-based powder and bentonite-based powder as mineral carriers. Then we evaluated the efficacy of these products in controlling cotton seedlings damping-off, a fungal disease caused by Rhizoctonia solani at four intervals of 15, 30, 45 and 60 days after sowing the cotton seeds under greenhouse conditions. The results of greenhouse experiment on application of biofungicides showed that the efficacy of BEN-B1 treatment to control R. solani was promising as it increased the number of healthy seedlings 3.42 to 3.57 fold and was much more effective than the carboxin/thiram fungicide in all stages

Preparation of new biofungicides using antagonistic bacteria and mineral compounds for controlling cotton seedling damping-off disease Keywords:

Preparation of new biofungicides using antagonistic bacteria and mineral compounds for controlling cotton seedling damping-off disease authors

S. Sobhan Ardakani

Department of Environment, Faculty of Basic Sciences, Islamic Azad University-Hamedan Branch

A Heydari

Department of Plant Pathology, Iranian Research Institute of Plant Protection, Tehran, Iran

L Tayebi

Department of Environment, Malayer University, Malayer, Iran

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