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.
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Claims 9
Claim · model-written summary
In unbagged Fuji apples, young fruit calcium absorption accounted for 30% of total fruit calcium.
Verbatim
e0“for non-bagged fruits,calcium absorption of young fruit accounted for 30% of the total fruit calcium content”
Claim · model-written summary
In unbagged Fuji apples, late fruit calcium absorption accounted for 70% of total fruit calcium.
Verbatim
e0“calcium absorption in late fruit development accounted for 70% of total fruit calcium content”
Claim · model-written summary
Fruit bagging increased humidity in the bag.
Not reportedComparator
Verbatim
e0“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”
Claim · model-written summary
Fruit bagging reduced fruit transpiration.
Not reportedComparator
Verbatim
e0“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”
Claim · model-written summary
Fruit bagging decreased calcium absorption.
Not reportedComparator
Verbatim
e0“Fruit bagging increased the humidity in the bag and reduced fruit transpiration, deceased calcium absorption.”
Claim · model-written summary
Bagged fruit had consistently higher nitrogen content than unbagged fruit.
Verbatim
e0“nitrogen content in bagged fruit was consistently higher than that of non-bagged fruit”
Claim · model-written summary
Bagged fruit had an increased nitrogen to calcium ratio.
Verbatim
e0“N/Ca of bagged fruit was increased.”
Claim · model-written summary
The authors attributed bitter pit occurrence to bagging-associated calcium and nitrogen changes.
- Taxon
- apples
Malus domesticat0 - Outcome
- occurrence of bitter pite0
- Qualifier
- mentioned factorse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Due to the mentioned factors the occurrence of bitter pit was induced.”
t0“bagged apples”
Claim · model-written summary
The authors propose applying organic substances to orchard soil to improve root-zone calcium and reduce bitter pit.
- Taxon
- apple
Malus domesticae0 - 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.

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.”
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