Hussain Almahasneh ⁽¹⁾, Ammar Zayoud ⁽²⁾ and Wajed Ghanem ^{(1) *}

(1). Damascus University, Damascus, Syria.

(2). General Commission for Scientific Agricultural Research, Hama ,Syria

(*Corresponding author: Wajed Ghanem, E-mail: ghanem565212@gmail.com)

Received:16/11/2022            Accepted:23/01/2023

Abstract: 

A field experiment was conducted at AlGhab Research Station affiliated with the General Commission for Scientific Agricultural Research (GCSAR). during the growing season 2021, to study the effect of nitrogen fertilizers application time and seed delinting on the growth and productivity of cotton (Variety Aleppo-124). The experiment was laid out according to split plot design with three replications. The statistical analysis results of the experiment clearly indicated to the existence of significant differences (P≤0.05) among nitrogen fertilizers and cotton seeds delinting treatments with respect to studied traits (plant height, number of fruiting branches, number of bolls per plant, dry weight of boll, cotton seed yield, fiber yield, ginning rate(. Application of nitrogen fertilizers at four splits recorded the highest value of studied traits (102.04 cm, 11.04 branch.plant^-1, 18.26 bolls.plant^-1, 5.80 g, 3115 kg.ha^-1, 2064 kg.ha^-1, 39.84 % respectively) as compared to other treatments. Regarding seed delinting treatments the chemical method (Using H₂SO₄) recorded significantly the highest values of studied traits (98.67 cm, 10.03 branch.plant^-1, 16.07 bolls.plant^-1, 5.82 g, 2767 kg.ha^-1, 1815 kg.ha^-1, 39.57 % respectively) as compared to other treatments. With respect to the interaction between nitrogen fertilizers application time and seed delinting, application of nitrogen fertilizers at four splits with seed delinting using sulphuric acids recorded significantly the highest values of studied treatments (106.19 cm, 12.17 branch.plant^-1, 19.36 bolls.plant^-1, 5.98 g, 3383 kg.ha^-1, 2274 kg.ha^-1, 40.19 % respectively) as compared to other interactions.

Keywords: Cotton, Nitrogen fertilizers, Seed delinting, Seeds yield, Fibre yield

Full paper in Arabic: pdf