Samia Alshbib(1)*, Abd alghani Khorshid(2), Ahmad Aljomaa(1), and Abd alghani Khaldi(1)
(1) Cotton Research department, General Commission for Scientific Agricultural Research, Aleppo, Syria. email:
(2) University of Aleppo, Aleppo, Syria.
(*Corresponding author: Sami al shbib. E-Mail: firstname.lastname@example.org)
A field experiment was carried out in 2020 at two sites, the first at the Agricultural Scientific Research Center in Hama, and the second at the Jub Ramla Research Station follow to the Agricultural Scientific Research Center in Al-Ghab, according to in randomized block design with three replications. The experiment aimed to study the response of the technological characteristics of the cotton crop (Aleppo 124) in Hama and Al-Ghab to changes in the level of fertilizer added from macronutrients (N, P, K), in addition to knowing the change in the fertilization efficiency index at different levels of application. The results showed that the fertilization efficiency is affected by the change in the levels of the added fertilizer, where the highest percentage of it was in treatment G (more than the fertilizer recommendation by 15%) in Hama site, which reach to 48.88%, while in the site of Jeb Ramla there were no significant differences in the fertilization efficiency between treatments. Some of the qualitative characteristics of cotton fibers were affected by the different fertilization rates. the length of staple increased in both locations, Hama and Jeb Ramla. The differences were not far between the treatments for fiber strength, and its highest value was in Hama and Jub Ramla (23.30 and 23.87 gr/tex) respectively. There were no significant differences for Micronaire among the studied fertilization treatments. The elongation character was affected in both sites of Hama and Jib Ramla, it was (6.987 and 6.933) %, respectively when fertilizing more than 30% fertilizer recommendation. The results of the uniformity characteristic differed between the two sites, as there were significant differences between the treatments at the Hama site, the highest value for this trait when treated was more than the fertilizer recommendation of 45%, and there was no significant difference between the treatments at the Jub Ramla site. Ginning rate The differences between the experimental treatments were significant in the Hama site, where the highest ginning rate was 43.77%, and as for the the Jub Ramla site, there were no significant differences for experimental treatments in this trait
Key words: fertilization efficiency, technological characters, ginning rate, micronaire.
Full paper in Arabic: pdf