Ammar Wafik Zayoud^*(1) Wassim Adlah⁽¹⁾ and Hussien Sulieman⁽¹⁾

(1). Al Ghab Research Center, General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.

(*Corresponding author: Dr. Ammar Wafik Zayoud. E-Mail: ammarwz78@gmail.com).

Received: 05/10/2018                                Accepted: 08/12/2018

Abstract

The research was carried out during 2011 and 2012 at AI_–Ghab Research Center to Study the response of cotton variety (Aleppo 124) for different levels of nitrogen fertilization under the conditions of AI-Ghab. Three genotypes (Aleppo124, Aleppo 33/1, and G73) and four levels of nitrogen fertilization (T1=0, T2=125, T3=200 and T4=275) kg/ha were used. The experiment was laid out in split-plot design with three replications. This study showed that there were no significant differences between, Aleppo124 variety, and line G73, whereas both surpassed significantly the variety Aleppo 33/1 in yield’s components and yield in two seasons. The level of nitrogen fertilization (T3=200) significantly surpassed the two levels (T1=0 and T2=125), but there was no significant difference with level (T4=275) in yield components and yield in two seasons. The increase in productivity reached (44.66 and 8.98%) in the first season and (59.17 and 16.88%) in the second season when compared T3 to T1 and T2 respectively. The best value of interaction between varieties and nitrogen fertilization level was achieved with the variety Aleppo124 and T3.

Keywords: Cotton, Nitrogen fertilization, Yield’s components, Yield.

Full Paper in Arabic: PDF