انتشار مرض عين الطاووس (Spilocaea oleagina)‎ على الزيتون و تقويم أضراره في مناطق بيئية مختلفة من سورية

الملخص EN

Peacock’s eye spot, caused by (Spilocaea oleagina) is among the most common fungal diseases of olives in different climatological regions in many olive growing regions worldwide, such as Europe, America and West Asia including Syria, where about 33 million trees are grown in the coastal region in addition to Idleb and Aleppo Governorates.

The disease causes leaf drop, and eventually weakness of the whole tree, resulting in leaves defoliation and crop yield losses that can reach 20%.

Results indicated that infection rate (%) and disease index on leaves increased considerably during March and April and slowed down in October and November.

Rate of infected leaves ranged between 23 and 74% and disease index ranged between 16 and 61%.

The effect of temperature and high relative humidity on infection rate and disease index was noticeable during the period January-April.

In Lattakia and Idleb regions, disease index ranged between 27 and 40% under natural infection conditions.