Effect of Spraying Salicylic Acid and Zinc Element on Cherry ‎Tomato Solanum lycopericum L. Characteristics Under ‎Greenhouse Conditions

Dhufr Gheni Omar(1) Othman Kalid AL-Mafargy*(1) and Hussien Aziz Mohammed(2)

(1). Department of Horticulture and Landscape Design. College of Agriculture. Diyala University . Iraq

(2). Department of Soil Science and Water Resources .College of Agriculture. Diyala University. Iraq

(*Corresponding author: Dr. Othman Kalid AL-Mafargy. E-Mail: Othmanalwan@uodiyala.edu.iq).

Received: 13/05/2020                               Accepted: 23/06/2020

Abstract

The experiment was conducted at a field of Horticulture and Landscaping Department, Gardening Engineering, Faculty of Agriculture, University of Diyala, during the autumn season of 2018/2019, to study the effect of spraying with zinc and salicylic acid on the total concentration of chlorophyll, concentration of ascorbic acid, total soluble solids, fruit weight and the percentage of water in the leaves of cherry tomato (cv. BATLLE) in order to understand some physiological effects of adding zinc and salicylic acid. The experiment was laid in Randomized Complete Block Design (RCBD) and replicated three times. Zinc element was sprayed in the form of chelated Zinc in three levels viz. 0, 50, and 100 mg/L, which were symbolized  by Zn0 , Zn50 and Zn100 respectively. Salicylic acid was sprayed in four levels viz. 0, 50, 100, and 150  mg/L, which were symbolized by SA0, SA50, SA100 and SA150 respectively. The results showed that spraying the plant with high levels of salicylic acid  SA150 resulted in a significant increase in all the characteristics under study. The results showed that increasing the concentration salicylic acid from (0) mg/L to (150) mg/L increased the concentration of chlorophyll in the leaves, ascorbic acid and total soluble solids in fruits, fruit weight and the percentage of water in the leaves by 41.93 %, 3.95%, 53.86%, 108.49% and  5.94%  respectively. The  Zn100 treatment had significantly the highest concentration of chlorophyll in the leaves, ascorbic  acid and total soluble solids in the fruit  and  fruit weight. The treatment (Zn100+SA150) had significantly higher values than other interactions for all the characteristics under study except the percentage of water in the leaves, where the interaction (Zn0+SA50) surpassed the other treatments significantly.

Key words: Cherry tomato, Salicylic acid, Chelated zinc, Total soluble solid,  Concentration of ascorbic acid.

Full paper in Arabic: PDF