RESPONSE OF TOMATO (LYCOPERSICUM ESCULENTUM L.)  TO IMBIBING SEEDS BY GA3, AND FOLIAR SPRAYING  BY BORON AND Α-TOCOPHEROL

CHOPI OMER  IBRAHIM; CHINUR H.  MAHMOOD

doi:10.26682/ajuod.2022.25.2.19

CHOPI OMER IBRAHIM Dept. of Horticulture, College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region-Iraq
CHINUR H. MAHMOOD Dept. of Horticulture, College of Agricultural Engineering Sciences, University of Sulaimani, Kurdistan Region-Iraq

DOI: https://doi.org/10.26682/ajuod.2022.25.2.19

Keywords: Tomato, Seed, Gibberellic acid, Boric acid, α-Tocopherol

Abstract

This study was carried out from March to October 2021 at two different locations in Sulaimani governorate, the first location was the University of Sulaimani, College of Agricultural Engineering Sciences, and the second location located in Sulaimani, Sitak, Kani Naz, the study aimed to indicated the impact of gibberellic acid on seed germination of local tomato seeds, and evaluated the effect of foliar application of boric acid and alpha-Tocopherol (α-Tocopherol ) on the vegetative growth and yield of tomato plants. The seeds were soaked in gibberellic acid at different concentrations (0 ppm, 50 ppm, and 100 ppm), and foliar spraying of boric acid at various levels (0 ppm, 15 ppm, and 30 ppm) started two weeks after transplanting. Also, another foliar applied was α-Tocopherol at different levels (0 ppm, 125 ppm, and 250 ppm) when the plants start to flowering. The results showed that gibberellic acid had a significant effect on the tomato seed germination. Additionally, the result about the interaction between all factors revealed that the interaction among (S1*B2 *E3) had a height significant (p≤0.05) role on the vegetative growth, plant height (135.000 cm), number of branches. Plant^-1 (57.000), the highest content of boron in leaves when using (S2*B3*E1) (0.460 mg. kg^-1), and the highest yield. Plant^-1 when using (S3*B2*E1) (3.187 kg). Whereas, all of the factors with all different concentrations had no significant (p˃0.05) effect on leaf area surface in tomato plants

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