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International Journal of Botany
Year: 2007  |  Volume: 3  |  Issue: 1  |  Page No.: 114 - 117

Biological Control of Fusarium oxysporum f. sp. ciceri by Nonpathogenic Fusarium and Fluorescent Pseudomonas

Ramandeep Kaur, Jaspal Kaur, Rama S. Singh and C. Alabouvette    

Abstract: Biocontrol efficacy of selected isolates of nonpathogenic Fusarium and fluorescent Pseudomonas was determined in growth chambers and in microplots. The selected isolates of nonpathogenic Fusarium and fluorescent Pseudomonas were evaluated singly as well as in combination against Fusarium oxysporum f. sp. ciceri (Foc) causing chickpea wilt. Under growth chambers conditions, antagonists were applied as seed and soil treatment while in microplots only seed treatment was done. Pathogenic isolate of F. oxysporum f. sp. ciceri was mixed in soil as soil treatment in all the combinations of antagonists. Under growth chamber conditions, there were 15-30 and 0-15% plants showing wilting after 30 days of sowing with treatment of nonpathogenic Fusarium and fluorescent Pseudomonas, respectively. Gradually the percentage of wilting increased and after 60 days of sowing it was 20-40 and 40-50%, respectively. The combination of Fo52 with C7R12 was the best where none of plants was observed wilted after 30 days of sowing and only 10% plants showed wilting after 60 days. Similar results were obtained from the microplot studies. The seed treatment with Fo52 and C7R12 in combination showed maximum seed germination and disease inhibition as compared to other treatment.

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