Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot
Mahmoud, E., Ibrahim, M., Saleh, W., Ahmed, M. (2015). Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot. EKB Journal Management System, 43(1), 53-64. doi: 10.21608/ejp.2015.94433
Emad El-Din Mahmoud; Mohamed Ibrahim; Wagida Saleh; Mohamed Ahmed. "Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot". EKB Journal Management System, 43, 1, 2015, 53-64. doi: 10.21608/ejp.2015.94433
Mahmoud, E., Ibrahim, M., Saleh, W., Ahmed, M. (2015). 'Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot', EKB Journal Management System, 43(1), pp. 53-64. doi: 10.21608/ejp.2015.94433
Mahmoud, E., Ibrahim, M., Saleh, W., Ahmed, M. Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot. EKB Journal Management System, 2015; 43(1): 53-64. doi: 10.21608/ejp.2015.94433

Compatibility between Antagonistic Fungi and Bacteria and their Influence in Controlling Sunflower Charcoal Rot

Egyptian Journal of Phytopathology
Article 5, Volume 43, Issue 1, December 2015, Page 53-64  XML PDF (146.3 K)
Document Type: Original Article
DOI: 10.21608/ejp.2015.94433
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Authors
Emad El-Din Mahmoud* 1; Mohamed Ibrahim1; Wagida Saleh2; Mohamed Ahmed1
1Plant Pathol. Res. Inst . , Agri c. Res. Centre, Giza, Egypt.
2Plant Pathol. Res. Inst . , Agric. Res. Centre, Giza, Egypt.
Abstract
Trichoderma harzianum and T. viride as well as Pseudomonas fluorescens , P. putida and Bacillus subtilis were evaluated as bioagents against Macrophomina phaseolina, the causative pathogen of sunflower charcoal rot. No in vitro adverse interaction could be recognized among the tested Trichoderma isolates and both P. fluorescens and B. subtilis. The highest antagonistic effect against M. phaseolina was recorded by B. subtilis as decrements in mycelial growth and sclerotial numbers. Similar effect was recorded for T. viride and P. fluorescens. In greenhouse and field experiments, T. viride and P. fluorescens and B. subtilis, along with the biocide (Rhizo-N) and fungicide (Rizolex-T) decreased the disease incidence.
In this respect, T. viride mixed with either B. subtilis or P. fluorescens revealed greater effect in disease control compared to the single application of any of them, especially with mixed B. subtilis treatment. The effect of the later showed disease control approximately similar to that of Rizolex-T treatment, as shown by healthy survivals and seed yield over two years study.
Keywords
Bacillus subtilis; charcoal rot; Macrophomina phaseolina; Pseudomonas spp; Trichoderma spp. and sunflower
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