Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions
Abdelwahab, K., Abdelrashed, K., Shehata, M., Alkharpotly, A., Abbas, M. (2025). Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions. EKB Journal Management System, (), 70-89. doi: 10.21608/aujst.2025.402401.1194
Kamel Hamdtah Abdelwahab; Khaled Gamal Abdelrashed; Mona Nemr Shehata; Abdelbaset Abdelsamea Alkharpotly; Mohammed Tawfik Abbas. "Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions". EKB Journal Management System, , , 2025, 70-89. doi: 10.21608/aujst.2025.402401.1194
Abdelwahab, K., Abdelrashed, K., Shehata, M., Alkharpotly, A., Abbas, M. (2025). 'Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions', EKB Journal Management System, (), pp. 70-89. doi: 10.21608/aujst.2025.402401.1194
Abdelwahab, K., Abdelrashed, K., Shehata, M., Alkharpotly, A., Abbas, M. Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions. EKB Journal Management System, 2025; (): 70-89. doi: 10.21608/aujst.2025.402401.1194

Effect of Bio and Mineral Nitrogen Fertilization on the Quality and Storability of Three Onion Cultivars Under Arid Region Conditions

Aswan University Journal of Sciences and Technology
Articles in Press, Accepted Manuscript, Available Online from 02 September 2025  XML PDF (2.11 MB)
Document Type: Original papers
DOI: 10.21608/aujst.2025.402401.1194
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Authors
Kamel Hamdtah Abdelwahab email 1; Khaled Gamal Abdelrashed2; Mona Nemr Shehata2; Abdelbaset Abdelsamea Alkharpotly3; Mohammed Tawfik Abbasorcid 4
1كلية الزراعة والموارد الطبيعية قسم البساتين
2Horticulture Department, Faculty of Agriculture and Natural Resources, Aswan University, Egypt
3Horticulture Department, Faculty of Desert and Environmental Agriculture, Matrouh University, Egypt.
4Agricultural Microbiology, Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt
Abstract
This study was conducted at the Research Experimental Farm of the Faculty of Agriculture and Natural Resources, Aswan University, Aswan, Egypt, during two successive seasons 2022–2023 and 2023–2024. It assessed the combined effects of nitrogen fertilization and biofertilizer inoculation on quality, and storability performance of three Egyptian onions (Allium cepa L.) cultivars:-(Giza 6 Mohassan, Giza Red, and Giza White), grown under sandy soil conditions. Five diazotrophic bacterial strains (Enterobacter cloacae, Sphingomonas paucimobilis, Bacillus licheniformis (k.95), Bacillus licheniformis(ECto3), Mixture of bacterial strains) and three nitrogen levels (50%, 75%, and 100% % dose of N) were evaluated. The integration of strain (Bacillus licheniformis (ECto3)) with 100 % dose of N resulted in the highest accumulation of NPK elements in onion bulbs. Giza White recorded the highest dry weight, total soluble solids, total sugars. Additionally, strain (Mixture of bacterial strains) combined with 50 % dose of N led to enhanced sugar accumulation and improved storage stability. Giza 6 Mohassan exhibited superior long-term storage performance, especially when combined with biofertilizer strains (Bacillus licheniformis (k.95)) or (Mixture of bacterial strains) and moderate nitrogen levels (50% or 75% dose of N). The results also revealed the superiority of the Giza 6 Mohassan cultivar in terms of vitamin C content.  These findings highlight the potential of integrated fertilization strategies to improve onion quality, storability, nutrient uptake, bulb quality, and postharvest performance while reducing dependence on chemical nitrogen inputs.
Keywords
Allium cepa L; Biofertilizers; Nitrogen levels; Bulb quality; Storage stability
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