Effects of Foliar Spraying of Potassium and Sodium on Quality and Shelf Life of Kiwifruits

LI Wenzhi; LONG Youhua; MO Feixu; HE Linan; SHI Jinqiao; RAN Fei

doi:10.19303/j.issn.1008-0384.2020.12.004

Volume 35 Issue 12

Dec. 2020

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LI W Z, LONG Y H, MO F X, et al. Effects of Foliar Spraying of Potassium and Sodium on Quality and Shelf Life of Kiwifruits [J]. Fujian Journal of Agricultural Sciences，2020，35（12）：1312−1320 doi: 10.19303/j.issn.1008-0384.2020.12.004

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LI W Z, LONG Y H, MO F X, et al. Effects of Foliar Spraying of Potassium and Sodium on Quality and Shelf Life of Kiwifruits [J]. Fujian Journal of Agricultural Sciences，2020，35（12）：1312−1320 doi: 10.19303/j.issn.1008-0384.2020.12.004

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Effects of Foliar Spraying of Potassium and Sodium on Quality and Shelf Life of Kiwifruits

doi: 10.19303/j.issn.1008-0384.2020.12.004

LI Wenzhi^1
,,
LONG Youhua^{1, 2
,
,},
MO Feixu¹,
HE Linan¹,
SHI Jinqiao¹,
RAN Fei¹

1.
College of Agriculture, Guizhou University, Guiyang, Guizhou　550025, China
2.
Engineering and Technology Research Center of Kiwifruit, Guizhou University, Guiyang, Guizhou　550025, China

Received Date: 2020-06-28
Rev Recd Date: 2020-09-20
Publish Date: 2020-12-31

Abstract

Abstract

Objective Effects of foliar spraying potassium and sodium solution on quality and shelf life of Kiwifruits were studied. Method Eight-year-old Actinidia deliciosa 'Guichang' plants under the conventional cultivation and management were sprayed separately with 9 different concentrations and combinations of potassium dihydrogen phosphate (PDP) and sodium chloride (SC) solutions. Quality of the kiwifruits at harvest and changes during storage in laboratory were evaluated. Result The quality of kiwifruits under treatments improved at first as the PDP and/or SC concentration increased but declined when higher concentrations were applied after a peak on quality enhancement was reached. And, the quality improvement was greater when both PDP and SC were applied in combination. Among the treatments, the 0.2% PDP/0.1% SC combination yielded the most significant enhancement on fruit quality with the highest glycolate-to-acid ratio of 14.54, vitamin C content of 128.13 mg·hg⁻¹, fruit shape index of 1.65, and individual fruit weight of 76.07 g. The presence of 0.2% PDP significantly reduced the occurrence of soft and rotten fruits during storage prolonging the shelf life of the kiwifruits. Conclusion Spraying the kiwifruit plants with a water solution of 0.2% PDP and 0.1% SC improved the quality, delayed the nutrient decline, postponed the soluble sugar peak, and extended the shelf life of the fruits.
- Kiwifruit,
- potassium,
- sodium,
- quality,
- storage

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References(39)

References

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