Relation of Balady Mandarin Trees Fruiting to use Different Nitrogen Sources | ||||
| Assiut Journal of Agricultural Sciences | ||||
| Volume 55, Issue 2, April 2024, Page 203-216 PDF (470.6 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajas.2024.263251.1325 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Abdel-Fattah M. El-Salhy  1; Hassan A. Abd El-Galil1; Sabah M. Badawy2; Ibrahim F. Fayyad2
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| 1Department of Pomology, Faculty of Agriculture, Assiut University, Assiut, Egypt. | ||||
| 2Citrus Research Department, Agricultural Research Center, Giza, Egypt. | ||||
| Abstract | ||||
| The experimental orchard in the Shandaweel region of the Sohag Governorate, Egypt, served as the study site for this investigation into the feasibility of using organic and bio fertilizers of Balady mandarin trees during the 2020, 2021and 2022 seasons. The experiment set up as a randomized complete block design with three replications, one tree each. Microbine as a bio form and humic acid as an organic form ware added in March, mineral nitrogen fertilizer is divided to equal three doses and applied at March, May and August. Using the recommended nitrogen dose (RND) via organic-N, bio-form, or combination of inorganic and organic plus microbine significantly increased growth traits, N, P, K, Mg, and total chlorophyll of leaves, as well as yield per tree compared to using RND as mineral –N. The trees that were fertilized with the triple form (25% mineral, 25% organic, and 25% microbine) had the highest values of these features. Using double or triple forms increased fruit quality in terms of increasing fruit weight, pulp percentage, total soluble solids, sugar, and vitamin C contents and lowering total acidity compared to using RND via a mineral-N source alone. Hence, it could conclude that the tree's nutrient status, yield, and fruit quality were all increased when 75% of the nitrogen fertilization was replaced with organic or bio-form. Furthermore, it reduced production expenses and potential environmental pollution caused by excessive use of chemical fertilizers. Moreover, the producers can generate products from organic farming. | ||||
| Keywords | ||||
| Fertilizers; Humic acid; Microbein; Balady mandarin; Nutrient status | ||||
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