Survey and Varietal Reaction to Early Blight Disease on Potato in Egypt | ||
| Egyptian Journal of Crop Protection | ||
| Volume 19, Issue 2, December 2024, Pages 1-18 PDF (3.02 M) | ||
| Document Type: Research articles | ||
| DOI: 10.21608/ejcp.2024.394162 | ||
| Authors | ||
| Ramadan A. Bakr* ; Abdullah Sobhy Hamad; El-Said Zaki Khalifa; Gomaa Abdel-Aleem Amer; Abeer Hamdy Makhlouf | ||
| Department of Agricultural Botany, Faculty of Agriculture, Menoufia University, Shebin El-Kom, Egypt | ||
| Abstract | ||
| Early blight disease is one of the most important fungal diseases of potato. A survey of early blight disease caused by Alternaria solani was carried out in different selected locations represent different soil types and different irrigation systems in Behira, El-Sharkia, New Valley, Menoufia and Gharbiya governorates, Egypt. The pathogenicity of different isolates of the A. solani (A1-A5) was carried out on the commercially susceptible grown potato cultivar Herms. Percentage of disease incidence (PDI) and percentage of disease severity (PDS) were recorded. Results revealed that percentage of disease incidence and disease severity varies among the surveyed locations. The highest disease incidence value was recorded 98,96,98,98 and 89% respectively in Behira, El-Sharkia, New Valley, Menoufia and Gharbiya governorates. while the highest disease Severity was recorded 57.2,42.8,40.8,38.8 and 37.4% respectively in Behira, El-Sharkia, New Valley, Menoufia and Gharbiya governorates. Alternaria solani isolates A3 and A1 were the most destructive isolates. Results indicate that selected potato cultivars showed different susceptibility to early blight and the most susceptible cultivar was Herms. | ||
| Keywords | ||
| Potato; Early Blight; Alternaria solani; Survey; Varietal Reaction | ||
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