Razan Knag (1)*, Badeeh Samra(2) and Mohammad Ahmed(3)
(1). Department of Agricultural Mechanization, Technical Faculty, Tartous University, Tartous, Syria.
(2). Department of Horticulture, Faculty of Agriculture, Tishreen university, Lattakia, Syria.
(3). Department of plant protection, Faculty of Agriculture, Tishreen university, Lattakia, Syria.
(*Corresponding author: Razan knag. E-mail: Razanknag@gmail.com)
Accepted: 13/04/2022 Received: 05/03/2022
Abstract:
This experiment was carried out in Miaar Shaker village (Tartous) in agriculture season (2020-2021) with the aim of studying the effect of spraying with salicylic and ascorbic acids on growth, productivity and quality specifications of the fruits of tomato plants in greenhouse. The design of the randomized complete sectors was followed, and the experiment included 9 treatments and 4 replications. The results showed a significant increase in growth and productivity indicators when spraying with salicylic and ascorbic acids compared to untreated control. The use of a mixture of salicylic and ascorbic acids at a concentration of 400ppm each led to a significant increase in productivity which is (5.90 kg/plant) compared to (2.94 kg/plant) for control plants. The content of vitamin c of the fruits increased when treated with a mixture of the two acids reaching (34.29mg/100 g fresh matter) while it did not exceed (18.30 mg/100g fresh matter) in the fruits of the control, in addition to improving the quality specifications of the fruits, including indicators (dry matter, total sugar ratio and solidity fruits…). The use of the spraying treatment of salicylic and ascorbic acids lead to a decrease in the percentage of nitrate in the fruits(53.74ppm) compared to the control (109.94ppm).
Keywords: Tomato, Salicylic acid, Ascorbic acid, Greenhouse.
Full paper in Arabic: pdf