Biological control of Ziziphus spina-christi leaf spots and using the leaf extract against some plant diseases | ||||
| Journal of Plant and Food Sciences | ||||
| Article 10, Volume 3, Issue 1, June 2025, Page 127-137 PDF (575.72 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpfs.2025.371405.1028 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ahmed Mostafa Zohair  1; Hussain Yussef Suleiman2; Yussef Al-Saeed Arab2
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| 1Plant protection department faculty of agriculture Al-Azhar university | ||||
| 2Botany Dept., Agric. Faculty, Al-Azhar Univ., Cairo, Egypt. | ||||
| Abstract | ||||
| The dominant Sidr variety in Siwa Oasis (thorny) was less affected than the thornless variety. A number of leaf spot-causing fungi were isolated: Alternaria alternata, Cercospora zizyphi, Cladosporium gloeosporioides, and Fusarium semitictum. Alternaria isolates were the most frequent, followed by Cercospora isolates, while Fusarium and Cladosporium isolates were the least frequent. All isolates grew successfully on all tested heavy metal salt concentrations (copper sulfate, zinc phosphate, silver nitrate). Alternaria isolates were the most tolerant, followed by Cercospora isolates, while the growth of Fusarium and Colletotrichum isolates was reduced but not stopped. Aqueous extract from Sidr leaves, at various concentrations, successfully suppressed the growth of the tested fungi. Fusarium oxsporum, followed by Fusarium solani, and then Rhizoctonia solani were the most inhibiting, while Fusarium, Aspergillus and Rhizopus are more tolerant. Ziziphus leaf extract showed its effectiveness in reducing soft rot of citrus fruits after storage at room temperature for 7 days. The rot was reduced by 68.9% with the original extract concentration, 50.3% with 50% concentration, and 39.2% with 25% concentration. | ||||
| Keywords | ||||
| Ziziphus leaf spot; A. alternata; C.gleosporioides; F. semitictum; C.ziziphi; Sidr leaf extract as antifungal; Spent mushroom substrate as antifungal; Penicilliun mold control | ||||
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