Amani Berawi*(1) Abd Al-Gani Khorchid(2) Mahammad Manhal Al-Zoubi(3) Ayham Asbah(1) and Saher Al-Bakeer(4)
(1). Scientific Agricultural Research Center in Hama, General Commission for Scientific Agricultural Research (GCSAR). Damascus, Syria
(2). Department of soil science, Faculty of Agriculture, Aleppo University, Aleppo, Syria.
(3). General Commission for Scientific Agricultural Research (GCSAR). Damascus, Syria.
(4). Scientific Agricultural Research Center in Hama, (GCSAR). Damascus, Syria.
(5). Department of horticulture, Faculty of Agriculture, Aleppo University, Aleppo, Syria.
(*Corresponding author: Eng. Amani Berawi. E-Mail: firstname.lastname@example.org).
Received: 16/12/2018 Accepted: 08/02/2019
The experiment was carried out in an olive orchard, Hama Research Center, General Commission for Scientific Agricultural Research (GCSAR), during 2016 and 2017 seasons in order to study the effect of foliar application dates by micronutrients on some vegetative, floral and productivity characteristics of olive tree (Kaisi cv.). The trees of the experiment were selected to be homogeneous in growth and age as possible. The foliar fertilizer contained all the necessary minor elements, and was sprayed in a constant concentration to all treatments (0.5 g/L) in different dates: one spray F1 (Before inflorescence), twice spray applications F2 (Before inflorescence and after fruit set) or three times F3 (Before inflorescence, after fruit set and one month before harvest date), in addition to the control without spraying (for comparison). The experiment was designed according to complete randomized block design, with three replicates for each treatment. The results showed that F2 treatment was significantly superior compared to other treatments except F 3 treatment, in term of vegetative growth traits. Thus, the effect of the foliar fertilizer on fruit set ratio and production had been obvious. The treatment F2 gave the highest productivity (34.27 kg) whereas F0 and F3 treatments gave (24.11 and 33.16 kg/tree respectively).
Key words: Olive, Micro-elements, Dates of foliar spray, Kaisi cultivar.
Full paper in Arabic: PDF