Occurrence of root-rot disease of chamomile in Egypt [electronic resource].

Includes references.

Recently chamomile (Matricaria chamomilla L.) root-rot disease are widely distributed causing serious losses on yield in many cultivated regions in Egypt. 45 isolates representing 10 fungal species were recovered from chamomile roots. Samples were collected from 13 localities at 2 different growth stages of the crop. The most dominant species were Macrophomina phaseolina; Fusarium oxysporum; Aspergillus niger; Rhizopus stolonifer; Fasarium solani and Rhizoctonia so/ani. Pathogenicity test proved the ability of F.oxysporum, R.solani and M.phaseolina to infect chamomile roots and produce the symptoms of root-rot disease. The efficacies of the antagonist Trichoderma harzianum, as well as, chitosan glutamate 0.5% were evaluated for the control of pathogenic fungi in vivo. Chitosan glutamate significantly suppressed the fungal diseases. Antagonistic T.harzianum showed lower reductive effect of disease in comparison with chitosan glutamate.

Summary in Arabic.

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