Response of some vegetative growth, yield and cluster quality of Grapevine Taifi to foliar application of Salicylic acid, Fulvic acid and Bio-fertilizers

Suliman, Hussein Mamo; Mohammed, Shawkat Mustafa

doi:10.58928/ku26.17122

	Response of some vegetative growth, yield and cluster quality of Grapevine Taifi to foliar application of Salicylic acid, Fulvic acid and Bio-fertilizers
Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 17, Issue 1, March 2026, Pages 193-203 PDF (498.38 K)
Document Type: Research Paper
DOI: 10.58928/ku26.17122
Authors
Hussein Mamo Suliman^* ¹; Shawkat Mustafa Mohammed²
¹Department of Horticulture/ College of Agricultural Engineering Science / University of Duhok
²Department of Horticulture, College of Agricultural Engineering Sciences, University of Duhok, Iraq
Abstract
This study was conducted during growing season (2024) on ten years old Grapevine cv. Taifi at private vineyard located in Dukok Government, Bare-Buhar Village, Kurdistan region-Iraq, the vines were trained on T-Trills, These vines, which were ten years old, were planted at 2.5 × 2.5 m distances between rows. to indicate the response of some vegetative growth, yield and cluster quality of grapevine (Vitis Vinifera L.) to foliar application of Salicylic acid at concentrations (0, 200 and 400 mgL-1), Fulvic acid at concentration (0, 3 and 6 g L-1) and soil application of Bio-fertilizers (Mycorrhizae) at levels (0, 50 and 100 g per vine-1 ), and their interaction effect on the studied traits. The data was analyzed using Randomize complete block design and the data was analyzed by SAS software, and the treatment means were compared at the 5% significant level using Duncan's multiple range tests (DMRT). The results showed that every measured parameter was considerably improved by all three treatments. Individually, the best results were consistently obtained with the highest application rates (400 mg L⁻¹ SA, 6 g L⁻¹ FA, and 100 g vine⁻¹ mycorrhizae). Their combined application showed a strong synergistic effect. In terms of carbohydrate content (15.81%), total sugar (24.3%), anthocyanin (1.53 mg/100g FW), cluster weight (691.2 g), and number of berries per cluster (256.3), the triple interaction of 400 mg L⁻¹ SA + 6 g L⁻¹ FA + 100 g vine⁻¹ mycorrhizae produced the most noticeable effects. The highest petiole contents of N (1.431%), P (0.508%), and K (1.410%) were also obtained with this treatment.
Keywords
foliage spray; Salicylic acid; Fulvic acid mycorrhizae; quality; Vitis vinifera L; Taifi

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