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270080

EFFECT OF PRUNING, DEFOLIATION AND NITROGEN FERTILIZATION ON GROWTH, FRUIT SET AND QUALITY OF ABDEL-RAZIK ANNONA CULTIVAR.

Article

Last updated: 22 Jan 2023

Subjects

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Tags

Horticulture (Vegetable, Pomology and Ornamentals)

Abstract

This investigation was carried out during two successive seasons of 2003 and 2004 on Abdel-Razik cultivar Annona. The trees were 11 years old  grown in a private orchard at BadrCenter, Behera Governorate. The study aimed to show the effect of some pruning levels, defoliation and nitrogen fertilization on growth, fruit set and quality. Results revealed that, N fertilization combined with pruning regimes gave the greatest values. Such treatments led to increase the lateral shoots number and number of leaves per shoot. The effective treatment was heading back by removing 20 cm. from shoot top plus N fertilization. All pruning treatments including defoliation either with or without N fertilization advanced flowering date while flowering period was not affected. The investigation showed that pruning regimes and pruning combined with N fertilization treatment increased number of flower per shoot, fruit set percentage and yield. The effective treatment, in this respect, was heading back by removing 10 cm. of shoot top + N fertilization. Such treatment had the highest value of fruit weight. No significant differences between different treatments and control concerning the fruit height, diameter and H/D, ratios were found. Treatments with N fertilization decreased the presence of TSS while total acidity was increased, this led to decrease in TSS/acid ratio. N fertilization increased leaf content of N and P while leaf content of K was not affected. Results revealed that, N fertilization supported with pruning improved growth, fruit set and fruit quality.

DOI

10.21608/ajas.2008.270080

Keywords

Annona, pruning, defoliation, N fertilization, fruit set, fruit quality, Thinning

Authors

First Name

Kh.

Last Name

A.El-Rouby

MiddleName

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Affiliation

Tropical fruit research division, Horticulture Research Institute, Agric. Research Center, Giza, Egypt.

Email

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City

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Orcid

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First Name

A.S

Last Name

Abdalah

MiddleName

-

Affiliation

Tropical fruit research division, Horticulture Research Institute, Agric. Research Center, Giza, Egypt.

Email

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City

-

Orcid

-

First Name

A.B

Last Name

Kamel

MiddleName

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Affiliation

Tropical Fruit Research Division, Horticulture Research Institute, Agric. Research Center, Giza, Egypt.

Email

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City

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Orcid

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Volume

39

Article Issue

4

Related Issue

37667

Issue Date

2008-12-01

Receive Date

2008-06-02

Publish Date

2008-12-01

Page Start

53

Page End

69

Print ISSN

1110-0486

Online ISSN

2356-9840

Link

https://ajas.journals.ekb.eg/article_270080.html

Detail API

https://ajas.journals.ekb.eg/service?article_code=270080

Order

5

Type

Original Article

Type Code

62

Publication Type

Journal

Publication Title

Assiut Journal of Agricultural Sciences

Publication Link

https://ajas.journals.ekb.eg/

MainTitle

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Details

Type

Article

Created At

22 Jan 2023