Abstract
This study investigates the effects nitrogen application ways (surface - subsurface fertilization) on the growth, yield, and fruit quality of ten-year-old Murcott mandarin trees grafted on sour orange rootstock under sandy loamy soil conditions in Belbeis district, Sharkia governorate, Egypt. Conducted over two growing seasons (2021/2022 and 2022/2023), the research evaluated the impact of different nitrogen doses (600 g, 800 g, and 1000 g) and application methods (surface vs. subsurface) on tree growth parameters, nutrient content, fruit yield, and quality. Results indicated that 1000 g N combined with subsurface application (S.S.A.) significantly enhanced tree height, canopy volume, and fruit yield, with the highest tree yield (77.78 kg and 99.78 kg) and hypothetical yield per feddan (16.34 tons and 20.95 tons). Subsurface application improved nitrogen use efficiency, reducing nitrogen losses through leaching and volatilization. The study highlights the importance of balancing nitrogen application methods to optimize productivity and fruit quality while minimizing environmental impacts. These findings align with global efforts to promote sustainable citrus production through precision agriculture, as emphasized by FAO (2022). The research concludes that subsurface nitrogen fertilization, when combined with appropriate nitrogen doses, offers a viable strategy for enhancing Murcott mandarin production, contributing to food security and environmental sustainability.
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Claims 6
Claim · model-written summary
Subsurface application of 1000 g N significantly enhanced tree height, canopy volume and fruit yield of Murcott mandarin.
- Taxon
- Murcott mandarint0
- Treatment
- 1000 g N combined with subsurface application (S.S.A.)e0
- Outcome
- tree height, canopy volume, and fruit yielde0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“1000 g N combined with subsurface application (S.S.A.) significantly enhanced tree height, canopy volume, and fruit yield”
t0“Murcott mandarin”
Claim · model-written summary
The highest tree yield, 77.78 kg and 99.78 kg in the two seasons, was obtained with 1000 g N applied subsurface.
- Taxon
- Murcott mandarint0
- Treatment
- 1000 g N combined with subsurface application (S.S.A.)e0
- Outcome
- tree yielde1
- Direction
- higheste1
- Value
- 77.78 kg and 99.78 kge1
Not reportedComparator
Verbatim
e0“1000 g N combined with subsurface application (S.S.A.)”
e1“with the highest tree yield (77.78 kg and 99.78 kg) and hypothetical yield per feddan (16.34 tons and 20.95 tons)”
t0“Murcott mandarin”
Claim · model-written summary
The hypothetical yield per feddan was highest (16.34 and 20.95 tons in the two seasons) with 1000 g N applied subsurface.
- Taxon
- Murcott mandarint0
- Treatment
- 1000 g N combined with subsurface application (S.S.A.)e0
- Outcome
- hypothetical yield per feddane1
- Direction
- higheste1
- Value
- 16.34 tons and 20.95 tonse1
Not reportedComparator
Verbatim
e0“1000 g N combined with subsurface application (S.S.A.)”
e1“with the highest tree yield (77.78 kg and 99.78 kg) and hypothetical yield per feddan (16.34 tons and 20.95 tons)”
t0“Murcott mandarin”
Claim · model-written summary
Subsurface application improved nitrogen use efficiency.
- Taxon
- Murcott mandarint0
- Treatment
- Subsurface applicatione0
- Outcome
- nitrogen use efficiencye0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“Subsurface application improved nitrogen use efficiency”
t0“Murcott mandarin”
Claim · model-written summary
Subsurface application reduced nitrogen losses through leaching and volatilization.
- Taxon
- Murcott mandarint0
- Treatment
- Subsurface applicatione0
- Outcome
- nitrogen losses through leaching and volatilizatione0
- Direction
- reducinge0
Not reportedComparator
Verbatim
e0“Subsurface application improved nitrogen use efficiency, reducing nitrogen losses through leaching and volatilization”
t0“Murcott mandarin”
Claim · model-written summary
The authors conclude that subsurface nitrogen fertilization with appropriate doses is a viable strategy for enhancing Murcott mandarin production.
Verbatim
e0“subsurface nitrogen fertilization, when combined with appropriate nitrogen doses, offers a viable strategy for enhancing Murcott mandarin production”