Abstract
Nitrogen (N) is vital for mango yield and fruit quality, but finding the optimal amount is crucial to avoid the ‘stay green’ problem, which diminishes both fruit quality and profitability. This study aimed to assess the impact of N levels on the fruit quality and yield of ‘Kensington Pride’ (‘KP’) mangoes and determine the amount of N that triggers the ‘stay green’ effect in fruit. A field trial was conducted in a commercial orchard with N treatments (0, 12.5, 25, and 50 kg ha−1) and four replications during the 2018 and 2019 cropping seasons. Fruit yield was quantified, and post-harvest quality (skin color during ripening, sugar content [°Brix], and texture) as well as ethylene effects were assessed. Fruit yields did not vary among N levels over the two cropping seasons but were significantly lower in 2018 (20.0 t ha−1) compared to 2019 (38.5 t ha−1), illustrating the alternate year-bearing habit of ‘KP’ mangoes. In the 2018 harvest, fruit from trees receiving 25 kg N ha−1 appeared yellow–green compared to those with less N, while fruit from trees with 50 kg N ha−1 exhibited ‘stay green’ skin, indicating that applications of 25 and 50 kg N ha−1 were excessive. There was no ‘stay green’ skin observed in the 2019 harvest, indicating that the environment may also be a contributing factor. The texture of ripe fruit from untreated control trees had the highest flesh resistance. Moreover, ethylene-treated fruit ripened in nine days post-harvest and had significantly lower sugar content than untreated fruit, which ripened in 14 days. This study provides valuable insights into the complex interactions among N application, fruit quality, and yield of ‘KP’ mangoes, highlighting the importance of appropriate N management for a sustainable and environmentally friendly commercial mango production system.
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Claims 8
Claim · model-written summary
Fruit yield did not vary among nitrogen levels across two seasons.
- Taxon
- mangoes
_from_India.jpg?width=60)
Mangifera indicat0 - Treatment
- N levelse0
- Outcome
- Fruit yieldse0
- Direction
- did not varye0
- Comparator
- N levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_from_India.jpg?width=500)
Verbatim
e0“Fruit yields did not vary among N levels over the two cropping seasons”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Fruit yield was lower in 2018 than 2019.
- Taxon
- mangoesMangifera indicat0
- Outcome
- Fruit yieldse0
- Direction
- lowere0
- Value
- 20.0 t ha−1e0
- Qualifier
- 38.5 t ha−1e0
- Comparator
- 2019e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit yields did not vary among N levels over the two cropping seasons but were significantly lower in 2018 (20.0 t ha−1) compared to 2019 (38.5 t ha−1)”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Fruit from trees receiving 25 kg N ha−1 appeared yellow–green relative to lower nitrogen levels in 2018.
- Taxon
- mangoesMangifera indicat0
- Organ / stage
- fruite0
- Treatment
- 25 kg N ha−1e0
- Outcome
- yellow–greene0
- Qualifier
- 2018 harveste0
- Comparator
- those with less Ne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the 2018 harvest, fruit from trees receiving 25 kg N ha−1 appeared yellow–green compared to those with less N”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Fruit from trees receiving 50 kg N ha−1 exhibited stay-green skin in 2018.
- Taxon
- mangoesMangifera indicat0
- Organ / stage
- fruite0
- Treatment
- 50 kg N ha−1e0
- Outcome
- ‘stay green’ skine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit from trees with 50 kg N ha−1 exhibited ‘stay green’ skin”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Stay-green skin was absent in the 2019 harvest.
- Taxon
- mangoesMangifera indicat0
- Outcome
- no ‘stay green’ skine0
- Qualifier
- 2019 harveste0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no ‘stay green’ skin observed in the 2019 harvest”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Ripe fruit from untreated trees had the highest flesh resistance.
- Taxon
- mangoesMangifera indicat0
- Treatment
- untreated control treese0
- Outcome
- flesh resistancee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The texture of ripe fruit from untreated control trees had the highest flesh resistance.”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Ethylene-treated fruit ripened in nine days versus 14 days for untreated fruit.
- Taxon
- mangoesMangifera indicat0
- Treatment
- ethylene-treatede0
- Outcome
- ripenede0
- Value
- nine dayse0
- Qualifier
- 14 dayse0
- Comparator
- untreated fruite0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethylene-treated fruit ripened in nine days post-harvest and had significantly lower sugar content than untreated fruit, which ripened in 14 days”
t0“‘Kensington Pride’ (‘KP’) mangoes”
Claim · model-written summary
Ethylene-treated fruit had significantly lower sugar content than untreated fruit.
- Taxon
- mangoesMangifera indicat0
- Treatment
- ethylene-treatede0
- Outcome
- sugar contente0
- Direction
- lowere0
- Comparator
- untreated fruite0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ethylene-treated fruit ripened in nine days post-harvest and had significantly lower sugar content than untreated fruit”
t0“‘Kensington Pride’ (‘KP’) mangoes”
The same questions in other papers
nitrogen · yield · Mangifera indica (mango)Positive and negative results
1 paper in the same direction as this paper · 22 reporting no difference from an alternative
- positive
- positive
- positive
20 papers more in this group
See all 24 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.