Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)

Purpose: This study was undertaken to investigate the effects of pruning and girdling on yield, fruit size and quality of ‘Kinnow’ mandarin (Citrus reticulate Blanco) trees during two seasons.  Research method: The treatments included: control (unpruned and ungirdled trees), light pruning (removal 1...

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Main Authors: Ahmad Ahmadpoor, Meysam Salari, Seied Mehdi Miri
Format: Article
Language:English
Published: University of Birjand 2022-03-01
Series:Journal of Horticulture and Postharvest Research
Subjects:
Online Access:https://jhpr.birjand.ac.ir/article_1963_c2774ee567869160082b59b5e58ad920.pdf
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author Ahmad Ahmadpoor
Meysam Salari
Seied Mehdi Miri
author_facet Ahmad Ahmadpoor
Meysam Salari
Seied Mehdi Miri
author_sort Ahmad Ahmadpoor
collection DOAJ
description Purpose: This study was undertaken to investigate the effects of pruning and girdling on yield, fruit size and quality of ‘Kinnow’ mandarin (Citrus reticulate Blanco) trees during two seasons.  Research method: The treatments included: control (unpruned and ungirdled trees), light pruning (removal 10% of 15-20 cm branches), intense pruning (removal 20% of 15-20 cm branches), girdling (removal 5 mm trunk bark), light pruning + girdling, and intense pruning + girdling. The treatments were applied in on-years (2016 and 2018) and traits were measured in following season. Findings: Light pruning increased yield and fruit number by 170.4% and 191.5%, respectively, while fruit weight and volume slightly decreased by 7.2% and 12.4%%, respectively, compared to control. Fruit dimensions and, TSS and TA of fruit juice were not affected by treatments. However, TSS/TA ratio was significantly declined in both pruning treatments. In addition, vitamin C content of fruits decreased in pruned trees and light pruned + girdled trees compare to control. The yield was positively correlated with fruit number and negatively with fruit weight, fruit volume and vitamin C content. Limitations: Despite these findings, more research is needed to identify mechanisms of pruning and girdling on alternative bearing in citrus. Originality/Value: These results suggested that pruning alone or plus girdling of ‘Kinnow’ mandarin trees reduce competition for nutrients and induce accumulation of carbohydrates in branches, which enhanced yield of the next season.
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spelling doaj.art-fb9a446e4dcb4f109f5279aae2ae76672022-12-22T02:25:43ZengUniversity of BirjandJournal of Horticulture and Postharvest Research2588-48832588-61692022-03-015Issue 1 - March 2022132010.22077/jhpr.2021.4350.12111963Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)Ahmad Ahmadpoor0Meysam Salari1Seied Mehdi Miri2Southern Kerman Agricultural and Natural Resources Research and Education Center, AREEO, Jiroft, IranDepartment of Horticulture, Isfahan (Khorasgan) Branch, Islamic Azad University, Khorasgan, IranDepartment of Horticulture, Karaj Branch, Islamic Azad University, Karaj, IranPurpose: This study was undertaken to investigate the effects of pruning and girdling on yield, fruit size and quality of ‘Kinnow’ mandarin (Citrus reticulate Blanco) trees during two seasons.  Research method: The treatments included: control (unpruned and ungirdled trees), light pruning (removal 10% of 15-20 cm branches), intense pruning (removal 20% of 15-20 cm branches), girdling (removal 5 mm trunk bark), light pruning + girdling, and intense pruning + girdling. The treatments were applied in on-years (2016 and 2018) and traits were measured in following season. Findings: Light pruning increased yield and fruit number by 170.4% and 191.5%, respectively, while fruit weight and volume slightly decreased by 7.2% and 12.4%%, respectively, compared to control. Fruit dimensions and, TSS and TA of fruit juice were not affected by treatments. However, TSS/TA ratio was significantly declined in both pruning treatments. In addition, vitamin C content of fruits decreased in pruned trees and light pruned + girdled trees compare to control. The yield was positively correlated with fruit number and negatively with fruit weight, fruit volume and vitamin C content. Limitations: Despite these findings, more research is needed to identify mechanisms of pruning and girdling on alternative bearing in citrus. Originality/Value: These results suggested that pruning alone or plus girdling of ‘Kinnow’ mandarin trees reduce competition for nutrients and induce accumulation of carbohydrates in branches, which enhanced yield of the next season.https://jhpr.birjand.ac.ir/article_1963_c2774ee567869160082b59b5e58ad920.pdfbiennial bearingcitrusfruit qualityyield
spellingShingle Ahmad Ahmadpoor
Meysam Salari
Seied Mehdi Miri
Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
Journal of Horticulture and Postharvest Research
biennial bearing
citrus
fruit quality
yield
title Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
title_full Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
title_fullStr Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
title_full_unstemmed Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
title_short Pruning and girdling influence alternative bearing of ‘Kinnow’ mandarin (Citrus reticulate Blanco)
title_sort pruning and girdling influence alternative bearing of kinnow mandarin citrus reticulate blanco
topic biennial bearing
citrus
fruit quality
yield
url https://jhpr.birjand.ac.ir/article_1963_c2774ee567869160082b59b5e58ad920.pdf
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