Investigating the Effect of Different Levels of Nitrogen Fertilizer on Quantitative and Qualitative Characteristics of Chrysanthemum (cv. Borna)

Subject Areas : Journal of Ornamental Plants

Mohammad Ali Khalaj ¹ , Seyed Mohammad Banijamali ² , Mohammad Reza Shafiei ³ , Elham Farahani ⁴ , Mostafa Javan ⁵ , Pegah Sayyad-Amin ⁶

1 - Department of Technology and Production Management, Ornamental Plants Research Center (OPRC), HSRI, AREEO, Mahallat, Iran
2 - Department of Technology and Production Management, Ornamental Plants Research Center (OPRC), HSRI, AREEO, Mahallat, Iran
3 - Department of Genetics and Breeding, Ornamental Plants Research Center (OPRC), HSRI, AREEO, Mahallat, Iran
4 - Department of Soil Science, Ferdowsi University of Mashhad, Iran
5 - Department of Horticulture and Landscape, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran
6 - Department of Horticulture and Landscape, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran

Received: 2023-11-04 Accepted : 2024-01-27 Published : 2024-02-03

Keywords: Chrysanthemum, Growing and flowering indices, Macro-and Micro-nutrients, N fertilizer,

Abstract :

Chrysanthemum is one of the five main cut flowers in Iran. Knowledge about the optimal range of macro-nutrientsespecially nitrogen (N), for the best quantitative and qualitative characteristics of chrysanthemum is of great importance. Randomized complete blocks design in three replications was implemented in this research. Five levels of N included 0, 75, 150, 225 and 300 kg/ha (ammonium nitrate) has been applied to chrysanthemum "Borna" cultivar in Mahalat city of Iran. These traits were measured: Score of life after harvest, branch number, flower numbers, flower longevity, days to flowering, chlorophyll, dry weight, shoot fresh weight, crown diameter, stem diameter and flower diameter. The results showed that maximum crown diameter, flower longevity, chlorophyll index, fresh and dry weight of the plant were obtained at the level of 150 kg/ha, compared to the control. Also, the highest total absorption of macro-nutrients (nitrogen, phosphorus and potassium (NPK)), and micro-nutrients (iron, manganese, zinc and copper) was observed at the level of 150 kg/ha fertilization. According to the results, N application in the level 150 kg/ha can be recommended to have best growth condition for the "Borna" cultivar of chrysanthemum in Mahalat city.

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