المسح الحقلي لمرض تبقع أوراق السخاب Phillyrea media L. المتسبب عن الفطر Fusicladium phillyrae ببعض المواقع في المنطقة الوسطى من الجبل الأخضر، ليبيا

الملخص EN

This study aimed to quantifying the disease Phillyrea leaf spot (Phillyrea media L.) AL-Jabal AL-Akhdar region and Identify environmental factors that play an important role in its distribution such as temperature and relative humidity.

The number of field visits were fifteen locations in AL-Jabal AL-Akhdar forests which located in the North-East of Libya.

These sites were different at the sea level in its highest, result of calculating the amount of disease recorded were significant differences between study locations and between the three years, with the highest incidence of the disease in the years of 2014 and 2015, Particularly in Kandforh, Al hammama, Al Garida areas.

The results also showed that less disease incidence in the highest locations, the disease incidence was about 34.05% in location between (0 -200 m) above sea level.

The results also pointed that there is a relationship between the age of plant leave and the amount of disease, estimating the amount of disease in the old, medial and young leaves showed the highest infection in young leaves 46 and 42% for the years 2014 and 2015 respectively.

The study results also showed high significance difference of the disease percentage and severity in the North direction of the tree reached (33.57 and 13.24) respectively in the year of 2015.