Volume 12, Issue 56 (vol. 12, no. 56 2023)                   2023, 12(56): 379-392 | Back to browse issues page

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Akbarzade S S, Karimi M, Chalavi V. Investigating the effect of wood waste compost and humic acid on the morphological and physiological characteristics of Zinnia (Zinnia elegans). Plant Process and Function 2023; 12 (56) : 24
URL: http://jispp.iut.ac.ir/article-1-1789-en.html
1- Department of Horticultural Sciences Sari Agricultural Sciences and Natural Resources University
2- Department of Horticultural Sciences Sari Agricultural Sciences and Natural Resources University , karimi.sanru@gmail.com
Abstract:   (383 Views)
Zinnia (Zinnia elegans) is an annual and widely used ornamental plant. Considering the importance of the growing medium in the production of ornamental plants, this study was conducted to investigate the effect of wood waste compost and humic acid on the morphological and physiological characteristics of Zinnia. Wood waste compost (0, 25, 50, 75 and 100% instead of peat moss in the control growth medium) along with humic acid (0, 250 and 500 mg L-1) were used. Peat moss, perlite and garden soil (1:1:1) were used as the control substrate. In this research, plant height, number and surface of leaves, fresh and dry weight of plants, fresh and dry weight of roots, flower diameter, chlorophyll, nitrogen, phosphorus and potassium of leaves were investigated. According to the obtained results, the highest amount of plant leaf area was obtained in 50% compost with 500 mg L-1 of humic acid and the highest number of leaves were obtained in 75% compost with 500 mg L-1 of humic acid. The largest flower diameter (76.2 mm) was recorded in 100% compost. The amount of chlorophyll a and b in 100% compost combined with humic acid of 500 mg L-1 was at the highest level. The highest amount of nitrogen (0.75%) was recorded in 100% compost. The application of humic acid 250 mg L-1 caused a significant increase in leaf potassium. In general, the results showed that the application of compost in amounts of 50 to 100 percent and humic acid of 250 and 500 mg L-1 was effective on flower diameter, plant height, number of leaves, chlorophyll, and the increase of nitrogen and potassium elements in Zinnia leaves.
Article number: 24
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Type of Study: Applicable | Subject: Horticulture
Received: 2022/10/28 | Accepted: 2023/03/7 | Published: 2023/11/7

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