The Effect of Water Stress and Potassium Addition on Zinnia Plants' Vegetative and Flowering Growth and Mineral Content

Al Fadhil, Tariq Zaid; Salah, Ziyad Khaif; Muhsen, Riyad Mannaa

doi:10.58928/ku24.15121

	The Effect of Water Stress and Potassium Addition on Zinnia Plants' Vegetative and Flowering Growth and Mineral Content
Kirkuk University Journal for Agricultural Sciences (KUJAS)
Volume 15, Issue 1, March 2024, Pages 145-148 PDF (747.62 K)
Document Type: Research Paper
DOI: 10.58928/ku24.15121
Authors
Tariq Zaid Al Fadhil^* ¹; ziyad khaif salah¹; riyad mannaa muhsen²
¹University 0f Tikrit
²university of tikrit
Abstract
The study was conducted in the field of the Horticultural Facilities Unit of the Department of Horticulture and Landscape Engineering / College of Agriculture - Tikrit University during the 2023 agricultural Spring season to produce Zinnia spp, Profusion Doube mix as flowering potted plants. The experiment included two factors; the first factor was three levels of water stress: irrigation at a level of 100%, %75, %50 of field capacity (FC). The second factor was addition of potassium at four concentrations (0, 1, 2, 3) gl^-1. The experiment was carried out according to the randomized complete block design (R.C.B.D) with split-plot system, and 4 pots per experimental unit at three replications. The results showed that irrigation treatment of 100% field capacity was significantly superior to in dry weight of shoot (4.00 g Plant^-1). This treatment gave the lowest value (5.125 mg 100 gl^-1) of chlorophyll content in leaves compared to the other irrigation levels. The treatment of 75% FC gave the lowest stem diameter (2.960 mm). Potassium addition treatment at 3gl^-1 had a significant superiority in all the studied traits. The interaction between study factors showed that irrigation at 100% FC and adding potassium at 3 gl^-1 gave a significant superiority in all characteristics.
Keywords
Zinnia; Seedlings; Potassium

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