Razan Knag (1)* Badeeh Samra(1) and Mohammad Ahmed(2)
(1). Department of Horticulture, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(2). Department of Plant Protection, Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Razan Knag. E-mail: Razanknag@gmail.com).
Accepted:17/05/2023 17/02/2023 Received:
Abstract:
This research was conducted in Miaar Shaker village (Tartous), during the agriculture season (2020-2021), to study the effect of spraying tomato leaves with salicylic and ascorbic acid on the growth of tomatoes and reducing the infection of Tuta absoluta under greenhouse conditions. The results showed a significant increase in growth indicators when spraying with salicylic and ascorbic acids compared with control, the use of a mixture of salicylic and ascorbic acids at concentration of 400ppm each led to a significant increase in plant height, number of leaves and leaf area, which reached to 197cm, 28.50 leaf/plant,17078cm2, respectively, with an increase of 25.27%, 28.94%, respectively compared to the control. The content leaves of N, K, P ,Fe, Zn and Ca increased to 0.59mg/kg, 1.11%, 2.95%, 656.7mg/kg, 49.89mg/kg, 0.51%, respectively. The results also showed a positive effect of using salicylic and ascorbic acids in reducing the damage caused by Tuta absoluta infection by reducing the percentage of infected leaves and fruits on tomato which reached to 9.67, 3.24%, respectively, when using mixture of salicylic and ascorbic acids at concentration of 400ppm each, while it was 90.99, 39.04% in control.
Keywords: Tomato, Salicylic acid , Ascorbic acid ,Plant Growth, Tuta absoluta Meyrick, green house.
Full paper in Arabic: pdf