Fatema abdelrahman*(1) Abdulgani Khorshid(2) Badralden Jalab(1) Mustafa mazen Otri(1)

(1). The Center for Scientific Agricultural Research in Aleppo, the General Authority for Scientific Agricultural Research, Damascus, Syria..

(2). Department of Soil Sciences, College of Agriculture, University of Aleppo, Aleppo, Syria.

(For correspondence: Dr. Fatema Mustafa Addulrahman. Email: heviardam5@gmail. com).

Received:3-9-2020 Accepted:6-10-2020

Abstract

The experiment was carried out at Hamima Research Station, Aleppo Research Center during the season 2019/2020 with the aim of studying the effect of adding different levels of nitrogen on the growth and productivity of irrigated wheat (Cham 7), and the experiment parameters were as follow: N0: without addition, N1: 70, N2: 105, N3: 140, N4: 175, N5: 210 and N6: 245 kg N/hiktar. The experiment was designed in a randomized complete block design with three operations for each treatment, and the results showed an increase in the rate of vegetative traits (spike, plant and spike bearer length and flag leaf area) with an increase in the rate of added fertilizer by 16% for plant length, 22.67% for spike length, 23.02% for spike bearer length, and 34.65% for flag leaf area compared to the control. The treatment N6 gave the highest value in all studied characteristics, and it outperformed the control treatment, but in terms of productive characteristics, the superiority of treatment N5, which gave the highest values, outperformed all treatments, expect for straw weight, where N6 surpassed the other treatments. N5 gave the highest grain yield (8366 kg/ hectare), where the increase rate was 49.72% compared with the control (4192 kg/ha), and the value of the harvest index decreased when the rate of added fertilizer increased.

Key words: Nitrogen Fertilization, Wheat, cv. Cham 7, Vegetative traits, Productivity traits.

Full paper in Arabic: PDF