Mohammad Noor AlAssaf ^*(1) and Abdulghani Alkhaldi⁽¹⁾

(1). Cotton Research Administration, Aleppo, Syria.

(*Corresponding author: Dr. Mohammad Noor ALassaf, E-Mail: assafnoor57@gmail.com.)

Received: 5/02/2022                 Accepted: 30/03/2022 

Abstract: 

The research was carried out at the Hamima Research Station of the Agricultural Scientific Research Center in Aleppo, during the 2020 and 2021 seasons, in a sandy loamy clay soil.  The research aimed to study the response of some productive and early traits of cotton variety Aleppo 118 to foliar spraying with fertilizer containing some micro-elements during the stages of plant growth. The experiment was designed according to the (Randomized Block Design), and the experiment treatments  were as follows: control treatment (T1) (without spraying the chelating fertilizer), treatment (T2) (the foliar fertilizer was sprayed only at the beginning of the flowering), treatment (T3) (the leaf fertilizer was sprayed twice The first at the beginning of flowers and the second after 15 days from the previous treatment), the treatment (T4) (the foliar fertilizer was sprayed three times, the first at the beginning of the flowers, the second and the third at an interval of 15 days). The results of the average of the two seasons for the seed cotton yield, showed that there were high significant differences between the studied treatments, the third treatment outperformed by (56, 32.3, 18.1)% over the treatments (T1, T2, T4) respectively. In addition, there was no significant difference between the fourth and second treatment, but they outperformed the first treatment (control) by (32.1 and 17.9), respectively. Regarding the number of bolls, the fourth, third and second treatments outperformed the first treatment by (50.0, 42.9, and 34.3) %, respectively, and there was no significant difference between the fourth, third and second treatments. The results also showed that there were significant differences between the studied treatments for the earliness of the variety, where the fourth treatment outperformed the first treatment, and there were no significant differences between the fourth, second and third treatments. It can be concluded that foliar spraying with fertilizer twice, the first at the beginning of flowers and the second 15 days after the first spray, led to a significant increase in the productive components of this variety.

Keywords: Cotton, The effect of adding micro nutrient, Components of the crop, Growth Stages.

Full paper in Arabic: pdf