Jenan Othman*⁽¹⁾   and  Jafaar  mahfood⁽¹⁾

(1). Horticulture Department,Faculty Of Agriculture, Tishreen university, Lattakia, Syria.

(*Corresponding author: Dr.Jenan Othman, E-mail: jenan.othman@gmail.com, 0955205560).

Received: 23/12/2022                      Accepted: 10/04/2023

Abstract: 

The research was  carried out in the village of Barna in Lattakia city, in a spring period of the year 2021, in order to study the effect of spraying different concentration of brassinolide and sodium nitrophenolate on vegetative growth and yield parameters of potato plants “Agraia”, The experiment was consisted of five treatments: Plants were sprayed with brassinolide at a concentration of 5 ppm, 7.5 ppm, sprayed with sodium nitrophenolate at a concentration of 20 ppm, 40 ppm, in addition to the control treatment. This was done according to a completely random design with three replications. The results showed a positive effect of both brassinolide and  nitrophenolate at different concentration in all parameters, the foliar application of brassinolide  at 7.5ppm was significantly  superior  in leaf area (24923 cm²/plant), leaf area index (8.901), fresh weight (450 g), dry weight (73.26 g) and the number of tuber per plant (13.16); While the treatment nitrophenolate at 40 ppm was significantly superior in plant height (35.5 cm), average tuber weight (110.14 g), the large tuber weight( 1135.5 g/plant), plant yield (1321.7 g) and marketing production (1267.7 g/plant).

Kay word: potato, nitrophenolate, brassinolide, growth, yield.

Full paper in Arabic: pdf