Arab, S., Omar, O. (2025). The effect of using nano-iron and gibberellic acid on some growth traits of Brachychiton populneus seedlings Spraying on the vegetative system. , 16(2), 58-63. doi: 10.58928/ku25.16208
Shahla Shawkat Arab; Omar Muzaffar Omar. "The effect of using nano-iron and gibberellic acid on some growth traits of Brachychiton populneus seedlings Spraying on the vegetative system". , 16, 2, 2025, 58-63. doi: 10.58928/ku25.16208
Arab, S., Omar, O. (2025). 'The effect of using nano-iron and gibberellic acid on some growth traits of Brachychiton populneus seedlings Spraying on the vegetative system', , 16(2), pp. 58-63. doi: 10.58928/ku25.16208
Arab, S., Omar, O. The effect of using nano-iron and gibberellic acid on some growth traits of Brachychiton populneus seedlings Spraying on the vegetative system. , 2025; 16(2): 58-63. doi: 10.58928/ku25.16208

The effect of using nano-iron and gibberellic acid on some growth traits of Brachychiton populneus seedlings Spraying on the vegetative system

Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 16, Issue 2, June 2025, Pages 58-63    PDF (987.24 K)
Document Type: Research Paper
DOI: 10.58928/ku25.16208
Authors
Shahla Shawkat Arab* ; Omar Muzaffar Omar
Iraq/mosul/university of mosul/college of Agriculture/Department of Forestry
Abstract
The study was conducted during the period from( 2023/4/1) to(2024/4/1). using the plastic greenhouse of the College of Agriculture and Forestry / University of Mosul. to evaluate the efficiency of Nano Fe and GA3 acid by spraying on the Brachychiton populneus. he spraying process was conducted using two factors: the first factor was Nano Fe fertilizer at four concentrations (0, 1, 3, 5) mg.L-1 and the second factor was GA3 acid at four concentrations (0, 250, 500, 750) g.L-1. The seedlings were arranged using a completely randomized design with three replications, where each replication contained 16 treatments, and each treatment included 5 seedlings. the results showed that seedlings treated with Nano Fe at a rate of 3 g.L-1 had significantly outperformed in several growth traits. These included an increase in stem diameter growth by 15.891mm. seedling-1, an increase in the number of vegetative branches by 2.072 branches. Seedling-1and an increase in the dry weight of the vegetative mass by 24.515 g. Additionally, spraying with GA3 at a concentration at a rate of 500 mg. L-1 had a significant effect, with seedlings showing an increase in stem diameter growth by 13.539 mm. Seedling-1and an increase in the dry weight of the vegetative mass by 20.095 g. On the other hand the interaction between Nano Fe at a concentration at a rate of 3g. L-1 and GA3 acid at a rate of 500 mg. L-1 was a significant effect, with seedlings showing an increase in stem diameter growth by 18.630 mm. Seedling-1 and an increase in the dry weight of the vegetative mass by 27.110 g. Furthermore, the results showed that the interaction between spraying with 5 g. L-1 Nano Fe and 500 mg. L-1 of GA3 acid had a significant effect on increasing stomatal density, which reached 0.107 stoma.mm-2.
Keywords
Foliar application; Nano Fe; ) Brachychiton populneus.); GA3; Foliar fertilization
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