Faten Karaman *(1), Yahya Kanaan (2), Wafaa Alshebli (2), Ayman Mustafa (2), khuzama Alabdullah(2), Alice Alaamer (2) and Lana Alazrony (3)
(1) Department of Environmental Sciences, Faculty of Science, Damascus University, Damascus, Syrian.
(2) General Commission for Scientific Agricultural Research, Damascus. Syrian.
(3) Ministry of Agriculture, Rural Damascus Agriculture Directorate. Syrian.
(*Corresponding author: Faten Karaman, email: faten.karaman@gmail.com,)
Received: 3/05/2021 Accepted: 13/10/2021
Abstract:
In order to evaluate the effect of irrigation frequency and nitrogen fertilization on the percentage of anise seed oil and crop yield, The experiment was conducted at Taiba Research Station of the Research Center in Damascus Countryside during two seasons 2015 and 2016. The effect of two factors was studied: irrigation frequency (10, 14, 18) days according to the field capacity, and the nitrogen fertilization rate (0, 30, 40) kg/ha, (green up) 43% N2. Anise was used at seed rate (20.5) kg/ha, the results showed a clear effect For irrigation frequency over productivity, with a significant superiority in treatment (10) days of irrigation frequency, in which the highest productivity was (168.81) kg/ha, the differences were statistically significant for (14) days of irrigation frequency, with (30) kg/ha fertilizers, the most productive of anise, as well as (14) days of irrigation frequency rate is the best in oil percentage (3.64%) without the effect of nitrogen fertilization.
Key words: Anise, frequency of irrigation, nitrogen fertilization, rate of anise seed oil
Full paper in English: pdf