Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality
El-Sagher, M., Mostafa, G., El-Ghadban, E., Soliman, W., Gahory, A. (2024). Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality. EKB Journal Management System, 4(1), 38-49. doi: 10.21608/aujst.2024.337888
Mostafa M. A. El-Sagher; Gehan G. Mostafa; El-Mowafy A. El-Ghadban; Wagdi Saber Soliman; Abd-Allah Gahory. "Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality". EKB Journal Management System, 4, 1, 2024, 38-49. doi: 10.21608/aujst.2024.337888
El-Sagher, M., Mostafa, G., El-Ghadban, E., Soliman, W., Gahory, A. (2024). 'Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality', EKB Journal Management System, 4(1), pp. 38-49. doi: 10.21608/aujst.2024.337888
El-Sagher, M., Mostafa, G., El-Ghadban, E., Soliman, W., Gahory, A. Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality. EKB Journal Management System, 2024; 4(1): 38-49. doi: 10.21608/aujst.2024.337888

Sowing date as a determining factor for Roselle, Hibiscus sabdariffa, production: II. Effect on biochemical components and quality

Aswan University Journal of Sciences and Technology
Volume 4, Issue 1, March 2024, Page 38-49  XML PDF (486.97 K)
Document Type: Original papers
DOI: 10.21608/aujst.2024.337888
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Authors
Mostafa M. A. El-Sagher1; Gehan G. Mostafa2; El-Mowafy A. El-Ghadban1; Wagdi Saber Soliman email orcid 3; Abd-Allah Gahory email 4
1Department of Horticulture, Faculty of Agriculture and Natural Resources, Aswan University, Egypt.
2Department of Horticulture (Ornamental Plants), Faculty of Agriculture, Beni Suef University, Egypt
3Horticulture Department, Faculty of Agriculture and Natural Resources, Aswan University
4Horticulture Department, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt
Abstract
Roselle plays a pivotal role in the pharmaceutical and food sectors due to its economic and cultural significance. In response to the challenges posed by climate change, identifying the optimal sowing date for Roselle crop in light with climate change has become crucial in agricultural practices. This study aimed to explore the influence of sowing dates on the nutrients, biochemical content, and quality of Roselle in the newly reclaimed soil of Aswan governorate. Four sowing dates were implemented in this experiment including April 15th, April 30th, May 15th and May 30th. The diverse sowing dates resulted in significant differences in photosynthetic pigments and biochemical components such as total phenols, total flavonoids, antioxidant activity, and vitamin C, along with variations in nutrient content (N, P, K, Ca, Fe, and Zn). Notably, sowing on May 15th consistently yielded the highest values for these traits across both seasons. The results underscore that planting on May 15th enhanced the nutritional and biochemical profile of Roselle, contributing to elevated levels of economic and health-related attributes. Specifically, this sowing date significantly improved the biochemical contents and overall quality of Roselle. Consequently, based on the findings of this study, it is recommended to sow Roselle in the middle of May to augment the pharmaceutical properties and quality.
Keywords
Roselle; mineral nutrients; biochemical components; anthocyanin; photosynthetic pigments
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