Jabnoun-Khiareddine H
Integrated Horticultural Production in the Tunisian Centre-East, Regional Research Centre on Horticulture and Organic Agriculture,
Chott-Mariem
Tunisia
Research Article
Rhizoctonia Root Rot of Pepper (Capsicum annuum): Comparative Pathogenicity of Causal Agent and Biocontrol Attempt using Fungal and Bacterial Agents
Author(s): Mannai S, Jabnoun-Khiareddine H, Nasraoui B and Daami-Remadi M
Mannai S, Jabnoun-Khiareddine H, Nasraoui B and Daami-Remadi M
Rhizoctoniaroot rot of pepper (Capsicum annuum L.) is becoming serious in Tunisia. Comparative pathogenicity tests performed for Rhizoctonia solani isolates recovered from pepper and potato showed that Rhiz.7 and Rhiz.4 were the most aggressive. They reduced by 53.5%-91.4% the aerial part fresh weight of inoculated cv. Baklouti plants relative to control. Rhiz.7 decreased by 81%-88% the root fresh weight on cvs. Beldi and Baklouti. Various fungal and bacterial agents were tested against R. solani. Dual culture trials showed that Trichoderma harzianum, T. viride and Glicladiumvirensgrew and sporulated profusely over R. solani colonies and altered its hyphae. Pseudomonas huttiensis 69, P. aureofaciens 31 and Burkholderiaglathei 35 reduced pathogen growth by 9.71-12.87%. These bio-agents were tes.. View More»
DOI:
10.4172/2157-7471.1000431