Evaluation The suitability of Trees Species to be grown in Streets. Case of Study: Al-Gomhouria Street in Latakia City, Syria

Bilall Alsayed*(1) and Osama Radwan(1)

(1). Department of Forestry and Ecology, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(*Corresponding author: Eng. Bilal Alsayed. E-Mail: belal_as11@hotmail.com).

Received: 27/04/2018                                Accepted: 03/10/2018


Street trees are an integral part of the street infrastructure, so choosing the right type plays a big role in determining the aesthetic and environmental value of any street. From an aesthetic perspective, street trees are important in increasing the beauty of the city and providing visual aids from an environmental perspective, street trees play an important role in reducing the effects of urbanization and population growth on the environment. The research dealt with the analysis of tree rows and studied the diversity of trees and determined their idealism in Al-Gomhouria Street in Latakia City. Results of this paper revealed prominent breaks in the arboreal rows, and that these rows contained five botanic species (Washingtonia filifera H., Melia azedarach L., Olea europaea L., Ligustrum ovalifolium and Ficusnitida L.) and the results showed that the ratios of many taxonomic units were not ideal, and it was noticed the irregular distribution of individuals between the types found in the street, which caused distortion of the beauty of the street and underestimated the importance of vegetation cover in the street. Findings showed a decrease in the value of the idealism of the four tree species where (Ligustrum ovalifolium) attained of 6.64/10 and (Olea europaea L.) 6.76/10 and (Washingtonia filifera H.) 7.13/10 and (Ficusnitida L.) 7.15/10, while the degree of (Melia azedarach L.) attained a better degree 7.72/10.

Key words: Street trees, Idealism degree, Latakia, Syria.

Full Paper in Arabic: PDF

The Development of Peacock Eye Disease Caused by Spilocaea oleagina on Khadairy Olive Variety in Latakia Governorate

Samer Ghanem*(1) Mohamed Tawil(1) and  Sabah Al-Maghribi(1)

(1). Plant Protection Department, Faculty of Agriculture, Tishreen University, Latakia, Syria.

(*Corresponding author: Eng. Samer Ghanem. E-Mail: samer.gh85@hotmail.com).

Received: 25/02/2018                                Accepted: 26/04/2018


The development of peacock eye disease on olive trees of Khadairy variety was studied during 2016 and 2017 in five orchards, located at Baksa in Latakia governorate, in order to identify the disease development during these two years. The disease development was observed during spring and autumn compared to summer and winter. The disease incidence was during spring of 2016 (March, and May), also between 20.22 – 24.17% and ranged between 23.34 – 28.19% in 2017. The disease severity ranged between 12.76 and 17.80% in 2016 and ranged between 15.75 and 19.14% in 2017. In autumn, the disease incidence was medium, where it ranged between 13.23 – 20.13% in autumn 2016 (September, October and November) and between 11.09 – 22.72% in the autumn of 2017. While the disease severity was between 6.89 – 12.45% in autumn 2016, and between 5.17 – 14.69% in 2017. The disease incidence was low in summer and winter, where the incidence rate was only 11.19% in summer of 2016 and 10.25% in 2017. The severity did not exceed 5.13% in 2016 and 5.05% in 2017. The incidence did not exceed 16.35% in winter 2016 and 16.07% in 2017. The severity was not more than 7.64% in 2016 and 8.35% in 2017. It was also observed different development of the disease, when comparing the lower part (1-2 m) of the tree with the upper part (2-4 m). The incidence and severity were high at the lower parts, and it was low at the upper parts of the tree over all of the studied traits.

Key words: Khdairy variety of Olive, Peacock eye disease, Spilocaea oleagina, Latakia, Syria.

Full paper in Arabic: PDF