Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees
Mahmoud, A., Zagzog, O., Salam, A., Qaoud, E. (2025). Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees. EKB Journal Management System, 30(1), 61-73. doi: 10.21608/jpd.2025.402206
Awad Mahmoud; Osama Zagzog; Abd-El-Kader Salam; El-Sayed Qaoud. "Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees". EKB Journal Management System, 30, 1, 2025, 61-73. doi: 10.21608/jpd.2025.402206
Mahmoud, A., Zagzog, O., Salam, A., Qaoud, E. (2025). 'Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees', EKB Journal Management System, 30(1), pp. 61-73. doi: 10.21608/jpd.2025.402206
Mahmoud, A., Zagzog, O., Salam, A., Qaoud, E. Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees. EKB Journal Management System, 2025; 30(1): 61-73. doi: 10.21608/jpd.2025.402206

Effect of Bio and Nitrogen Fertilizers on Growth Aspect and Leaf Content of Mineral and Pigment of Washington Navel Orange Trees

Journal of Productivity and Development
Article 4, Volume 30, Issue 1, January 2025, Page 61-73  XML PDF (519.32 K)
Document Type: Original Article
DOI: 10.21608/jpd.2025.402206
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Authors
Awad Mahmoud1; Osama Zagzog email 2; Abd-El-Kader Salam1; El-Sayed Qaoud3
1Plant Prod. Depart, Fac. Tech. and Dev., Zagazig University, Egypt
2Plant Prod. Depart. Fac. of Tech. and Deve., Zagazig Univ., Egypt.
3Hort. Dept., Fac. Agric., Suez Canal Univ., Egypt
Abstract
The field experiment was carried out during 2020/ 2021and 2021/ 2022 seasons on Washington navel orange   trees and grown in a private citrus orchard located at Wady Al-Molak, district Al-Ismailia Governorate, Egypt. Used randomized complete block design with three replicates. The results showed that significant between treatments for all studies characters.
The treatment (5 L. Bio. + 70 kg. N/fed) gave the highest leaf length, leaf width and leaf area. The highest values of N, P and K % obtained from the trees fertilized by resulted from the trees fertilized by (5 L. Bio. + 100 kg. N/fed), treatment in first and second seasons respectively.
In addition, the same treatments gained the highest values of Fe (ppm  ), Mn (ppm ), Zn (ppm , chlorophyll A (mg/100g), chlorophyll B (mg/100g), total chlorophyll (mg/100g) and carotene (mg/100g), in the first and second seasons.
Conclusively, from these results it could  be a combination of chemical and bio fertilizer is not only beneficial in improving the properties and environment of soils, but also promotes growth, macro and micro nutrients, chlorophyll contents in orange. Here, our work confirmed that was helpful for citrus growth.
 
Keywords
Washington; Navel orange; bio-fertilizers; Growth aspects; chlorophyll; Mineral content
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