تأثير الري بمياه الصرف الصحي المعالجة في معدل بقاء ونمو غراس لسان الطير والطرفاء المفصلية في المناطق الجافة

Abstract EN

This research was conducted near Al-Doueir nursery at Rif-Dimashq Governorate during the years 2009 and 2010.

The objective of the research was to study the effect of irrigation with treated waste water (Adra treated waste water station) on survival rate and growth of seedlings of Ailanthus altissima and Tamarix articulata in arid zones; the seedling age was one year.

The experimental design was randomized complete block design including five irrigation treatments i.e.

Tl: fresh water (control); T2: two times fresh water and one time treated waste water; T3 : one time fresh water and one time treated waste water; T4: one time fresh water and two times treated waste water, and T5 : treated waste water.

Survival rate was estimated and plants heights were measured at the end of each year from the study.

Results indicated that Tamarix articulata seedlings were significantly superior in the average survival rate and the average plant height at the both the study years in comparison with Ailanthus altissima seedlings.

Tamarix articulata seedlings had 98.17 % survival rate in both the study years, while Ailanthus altissima seedlings had 77.67 % and 72.00 % for the first and the second year, respectively.

Tamarix articulata seedlings had 144.80 cm and 207.08 cm plant height for the first and the second year, respectively, while Ailanthus altissima seedlings had 35.67 cm and 71.65 cm for the first and the second year, respectively.

The irrigation with fresh water had significant effect on Tamarix articulata seedlings plant height (228.67 cm) at the second year only.

The irrigation with one time fresh water and two times treated waste water had significant effect on Ailanthus altissima seedlings survival rate (81.67 %) at the second year only.

The other irrigation treatments had non-significant effect of the studied parameters for both plant species at the two studied years.

In conclusion, treated waste water could be used for irrigation of forest seedlings under arid zones and dry land conditions.