Muhammad Abdul Aziz(1), Hussam Eddin Khalasi(1), and Ghadeer Al-Houshi *(1)
(1). Department of Field Crops, Faculty of Agriculture, Tishreen University, Latakia, Syria.
(*Corresponding author: Ghadeer Al-Houshi, E-mail: ghadeerrafikalhoushi@gmail.com)
Received: 26/10/2022 Accepted: 29/11/2022
Abstract:
A field experiment was conducted in the village of Jaiboul in the countryside of Jableh during the agricultural season 2021/2022, to study the effect of adding nitrogen fertilizer (urea 46%) at a rate of 0, 100 and 200 kg/ha, and potassium sulfate fertilizer at a rate of 0 and 100 kg/ha, and the interaction between them in some Chemical characteristics of the Rocket plant “local” variety, the experiment was designed as a factorial experiment carried out in a randomized complete block design with three replications, and the comparison between the means was done using the least significant difference test L.S.D at the level of significance of 5%. The results showed that there was a significant effect of nitrogen fertilization in all studied traits, and the average of 200 kg/ha achieved the highest rates in the total carbohydrate content of leaves (7.00%), the oil content in the seeds (29.72%), and the protein content in the leaves (5.24%). And the content of phenols in the leaves (11.12 mg/g fresh weight).The results also showed a significant effect of potassium sulfate fertilization in all studied characteristics, adding 100 kg/ha led to a significant increase in the total carbohydrate content of leaves (5.96%), oil content in seeds (27.02%), and protein content in leaves ( 4.26%), and the content of phenols in the leaves (9.66 mg/g fresh weight). The interaction between nitrogen and potassium fertilization had a significant effect on all studied characteristics, as the interaction 200 kg/ha urea and 100 kg/ha potassium sulfate achieved the largest rates in all studied characters.
Key words: Rocket, fertilization, nitrogen, potassium, chemical.
Full paper in Arabic: pdf