Mais Naoof (1)* and Roula Bayerli (2)
(1). Faculty of Agriculture, Damascus University, Damascus, Syria.
(*Corresponding author: Mais Naoof, Email: mais3462@gmail.com).
Received: 12/02/2025 Accepted:10/12/2024
Abstract:
The experiment and Chemical analyses were carried out in the Biological Control Department in Hama Governorate and the laboratories of the Faculty of Agricultural Engineering – Damascus University – Syria during the years (2020 – 2021 and 2021 – 2022). The aim of it was to studying the effect of the bio-fertilizer Trichoderma harzianum (at concentrations 105 ,106, 107 spores/ml), indole acetic acid IAA (at concentrations of 50 and 100 ppm) and the interaction between them, in improving vegetative growth, fruits and productivity indicators of tomato plants (Shorouk variety).The experiment was designed according to a complete randomized block design. The results showed that treatment Trichoderma at 105 spores/ml was superior to the other biofertilizer treatments and control with significant differences in morphological indicators (81.57 cm for plant height, 77.33 leaves for number of Leaves and 7853.3 cm2 for leaf surface area), indicators related to fruits (4.13 Brix° for TSS, 4.55 for 4.47, 1.91 kg/cm2 for hardness) and production indicators (13.02 clusters for number of clusters/plant, 4.07 flowers for number of flowers set/cluster and 211.24 g for average fruit weight), While there were no significant differences between IAA 50 ppm and control. Also, the interaction treatment between Trichoderma at 105 spores/ml with IAA 50 ppm was superior to the other treatments and control with significant differences in morphological indicators (92.22 cm for plant height, 85.28 leaves for number of Leaves and 8770.4 cm2 for leaf surface area), indicators related to fruits (4.43 Brix° for TSS, 4.55 for pH) and production indicators (14.94 clusters for number of clusters/plant, 4.61 flowers for number of flowers set/cluster and 231.50 g for average fruit weight) and without significant differences with the treatment of Trichoderma at 105 alone, while the treatment of Trichoderma alone (at 105) was superior to the other treatments and to the control with significant differences for the fruit firmness indicator (2.28 kg/cm2). the treatments with Trichoderma at 106 and 107 spores/ml, IAA at 100 ppm and their interaction gave lowest value for all indicator.
Keywords: Tomato, Lycopersicon esculentum, biofertilizer, Trichoderma Harzianum, IAA, Productivity.
Full Paper in Arabic: pdf