P-ISSN: 2789-3065, E-ISSN: 2789-3073
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2025, Vol. 5, Issue 2, Part B

Efficacy of salicylic and oxalic acids against Phytophthora-induced hollow stem rot of cabbage in Egypt


Author(s): Hassan A Gouda, Amal MI Eraky, Ahmed M Hamada and Ahmed G Gad

Abstract: Cabbage (Brassica oleracea var. capitata L.) is one of the most important and widely cultivated winter cruciferous vegetables in Egypt. Six fungal isolates were obtained from rotted tissues of cabbage hollow stems and identified based on morphological characteristics: Phytophthora dreschleri (3 isolates), Fusarium oxysporum (1), F. verticillioides (1), and Alternaria alternata (1). Pathogenicity tests revealed that Phytophthora sp. successfully infected wounded cabbage stems, producing large rotting cavities with disease incidences of 60.2%, 40.1%, and 10.3%, whereas the other isolates were non-pathogenic. The antifungal efficacy of salicylic acid (SA) and oxalic acid (OA) was evaluated in vitro and in greenhouse conditions. OA at 30% inhibited mycelial growth by 94% and reduced disease severity by 85%, while SA at 10% inhibited mycelial growth by 96% and reduced disease severity by 82% compared to the control. These findings suggest that both SA and OA can serve as effective, eco-friendly inhibitors of cabbage hollow stem rot under Egyptian conditions.

DOI: 10.22271/27893065.2025.v5.i2b.147

Pages: 99-103 | Views: 180 | Downloads: 62

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International Journal of Plant Pathology and Microbiology
How to cite this article:
Hassan A Gouda, Amal MI Eraky, Ahmed M Hamada, Ahmed G Gad. Efficacy of salicylic and oxalic acids against Phytophthora-induced hollow stem rot of cabbage in Egypt. Int J Plant Pathol Microbiol 2025;5(2):99-103. DOI: 10.22271/27893065.2025.v5.i2b.147
International Journal of Plant Pathology and Microbiology
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