Paper · 2007

Study on the relationship between calcium nutrition and bitter pit in bagged apples

Hao Bao-feng

9
claims
10
verbatim quotes
1
citations
3
research areas
—
Not open access

Abstract

The bagged fruit of Fuji apple cultivar were used to study the relationship between the occurrence of bitter pit and the content of calcium and nitrogen in fruit. The changes of the content of calcium and nitrogen in the bagged young and mature fruit, the humidity in the bag and the incidence rate of bitter pit were examined regularly. Results showed that for non-bagged fruits,calcium absorption of young fruit accounted for 30% of the total fruit calcium content, and calcium absorption in late fruit development accounted for 70% of total fruit calcium content. Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption. Meanwhile, nitrogen content in bagged fruit was consistently higher than that of non-bagged fruit, and N/Ca of bagged fruit was increased. Due to the mentioned factors the occurrence of bitter pit was induced. Applying organic substances to the soil in the apple orchards could improve the provision of Ca2+ in root zone and reduce the incidence rate of bitter pit.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher.

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 9

Observationobservedoriginal resultmeasured

Claim · model-written summary

In unbagged Fuji apples, young fruit calcium absorption accounted for 30% of total fruit calcium.

Taxon
fruitse0
Organ / stage
young fruite0
Outcome
calcium absorptione0
Value
30%e0

Verbatim

e0

“for non-bagged fruits,calcium absorption of young fruit accounted for 30% of the total fruit calcium content”

✓ located verbatim in the source · abstract, characters 358–466 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In unbagged Fuji apples, late fruit calcium absorption accounted for 70% of total fruit calcium.

Taxon
fruite0
Organ / stage
late fruit developmente0
Outcome
calcium absorptione0
Value
70%e0

Verbatim

e0

“calcium absorption in late fruit development accounted for 70% of total fruit calcium content”

✓ located verbatim in the source · abstract, characters 472–565 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Fruit bagging increased humidity in the bag.

Taxon
fruite0
Treatment
Fruit bagginge0
Outcome
humidity in the bage0
Direction
increasede0

Not reportedComparator

Verbatim

e0

“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”

✓ located verbatim in the source · abstract, characters 567–676 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Fruit bagging reduced fruit transpiration.

Taxon
fruite0
Treatment
Fruit bagginge0
Outcome
fruit transpiratione0
Direction
reducede0

Not reportedComparator

Verbatim

e0

“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”

✓ located verbatim in the source · abstract, characters 567–676 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Fruit bagging decreased calcium absorption.

Taxon
fruite0
Treatment
Fruit bagginge0
Outcome
calcium absorptione0
Direction
deceasede0

Not reportedComparator

Verbatim

e0

“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”

✓ located verbatim in the source · abstract, characters 567–676 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Bagged fruit had consistently higher nitrogen content than unbagged fruit.

Taxon
fruite0
Outcome
nitrogen contente0
Direction
highere0
Comparator
non-bagged fruite0

Verbatim

e0

“nitrogen content in bagged fruit was consistently higher than that of non-bagged fruit”

✓ located verbatim in the source · abstract, characters 688–774 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Bagged fruit had an increased nitrogen to calcium ratio.

Taxon
fruite0
Outcome
N/Cae0
Direction
increasede0

Verbatim

e0

“N/Ca of bagged fruit was increased.”

✓ located verbatim in the source · abstract, characters 780–815 · show in text ↑
Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors attributed bitter pit occurrence to bagging-associated calcium and nitrogen changes.

Outcome
occurrence of bitter pite0
Qualifier
mentioned factorse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Due to the mentioned factors the occurrence of bitter pit was induced.”

✓ located verbatim in the source · abstract, characters 816–886 · show in text ↑
t0

“bagged apples”

✓ located verbatim in the source · title, characters 70–83 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors propose applying organic substances to orchard soil to improve root-zone calcium and reduce bitter pit.

Treatment
Applying organic substances to the soile0
Outcome
reduce the incidence rate of bitter pite0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Applying organic substances to the soil in the apple orchards could improve the provision of Ca2+ in root zone and reduce the incidence rate of bitter pit.”

✓ located verbatim in the source · abstract, characters 887–1042 · show in text ↑

trap barrier · nutrient: content · Malus domestica (apple)Positive and negative results

6 papers: 5 positive, 1 negative or no effect

5 in the opposite direction

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

trap barrier · physiology: gas exchange · Malus domestica (apple)Positive and negative results

6 papers: 3 positive, 3 negative or no effect

2 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 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.