المجلة الدولية للعلوم والتقنية

Leaf Spot of Date Palm is a common disease in palm growing areas around the world. It is caused by many fungi and is widely spread in neglected farms. It causes the death of leaf tissues that perform the sound construction process, which affects the amount of production. It has been shown that most economic varieties in the Sahel region are infected with this disease. The study aimed to identify and change the incidence of date palm leaf spot disease and isolate and diagnose the pathogens causing leaf spot in different varieties of date palms for the study of three regions of the western coastal region of libya (Surman, Sabratha and Ajilat) included Surman Essahel, Qanawiya, Al-alalga, Nahda, Zaramqa and Al-galmiya. The results of the field survey leaf spot disease is present in all the confinement areas, and the highest severity of infection was in the zaramqa area (63.5%) and the lowest in the Qanawiya area (41.2%), the highest severity of infection was recorded on the Tabuni cultivar in the Nahda area (75%) and the lowest on the Halawi cultivar in the Al-galmiya area (8.3%), Repeated isolation from the leaves indicated the presence of several fungi associated with the symptoms of the disease as caustive agents of the disease. Date Palm leaf spot appears, Alternaria spp., Fusarium spp., Cladosporium spp., Aspergillus niger. The symptoms of the disease appear in the form of irregular spots on the leaflets leading to the death of the infected tissues. Given the old nature of this disease and the reasons for its spread in the field, the study concluded that the irrigation system is necessary and that it focuses on drip irrigation bones. Shedding and burning infected leaves so that they are not source of the image spraying infected plants with one of the specialized fungal ladies............. Key words: ...........Leaf Spot, date palms, Western region, Libya.