Hanny Mahfod* (1), Akram Alblkhy(1) and Wassem Adela (2)
(1). Soil Science Dept ,Faculty of Agriculture, Damascus University, Damascus, Syria.
(2). Agricultural Research Center of Al-Gab, General Commission for Scientific Agricultural Research, Damascus, Syria.
(*Corresponding author: Hanny Mahfod. E-Mail: hanimhfood69@gmail.com).
Received: 21/09/2022 Accepted: 8/11/2022
Abstract:
This research was carried out at the Al-Gab during 2018 and 2019. The experiment was laid according to randomized complete block design, to study effect of potassium fertilization on yield, content of protein and content of some nutrients in quinoa plant in Al-Gab area. Seven levels of potassium fertilization (0-12.5-25-37.5-50-62.5-75 kg K2O/ha) were used. The results showed that the addition of potassium fertilization significantly increased the content of nitrogen, potassium and phosphorus in leaves and grains, Also the results showed that the addition of potassium fertilization significantly increased the content of the protein in grains and the grain yield, the highest grain yield in two seasons (3.32, 3.28 t/ha) was obtained when 75 kg K2O /ha was added, without significant differences between it and the levels 50 and 62.5 kg K2O /ha.
Key words : quinoa, nitrogen, potassium, phosphorus, protein.
Full paper in Arabic: pdf