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49321

EFFECT OF HUMIC AND FULVIC ACIDS WITH SOME NUTRIENTS AT DIFFRENET TIME OF APPLICATION ON YIELD AND FRUITS QUALITY OF ANNA APPLE TREES

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Last updated: 04 Jan 2025

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Abstract

The present investigation was undertaken during the selected two successive seasons of 2012 and 2013 on 12 years old Anna apple trees (Malus domestica, Borkh) budded on Shobra khan apple rootstocks. The selected trees were planted in a private orchard in Tanta, Gharbia Governorate, in clay soil and spaced at 3 x 4 meters apart. The trees were trained as open-vase form, irrigated by Nile water using surface irrigation (basing irrigation) system. The selected trees received the same horticultural practices and fertilization regime. The experiment was conducted on 60 apple trees Anna cv . in both seasons, ten  treatments were carried out, each treatment replicated three times considering each two trees as a replicate using a split plot design , Humic  and fulvic acids were added  at 4 liter/fed. and  mix  with   calcium nitrate ( 0.4 %) , zinc sulphate ( 250 ppm)  and borax  ( 20 ppm)  as foliar spray  at  five  development stages  (at bud burst , fruit set, at the beginning  of false  coloring , at the  end  of false  coloring   and at the  beginning  of true  coloring. Sprayed trees with fulvic acid at 4 liter/fad.  and mixture of  calcium nitrate (0.4 %) , zinc sulphate ( 250 ppm)  and borax  ( 20 ppm) at  bud burst ( T6) significantly increased  both leaf  surface area and  shoot length in both seasons. While T7  sprayed trees with fulvic  acid at 4 liter/fed. and mix., calcium , zinc and boron after fruit set recorded the highest values of fruit number/tree, fruit weight and fruit volume, soluble solid content, soluble  solid content /acid ratio and total sugars and decreased  specific gravity in fruits  in both seasons . fruit height and diameter were increased with  sprayed trees  with  humic  acid  at 4 liter/fed and mixture of  calcium nitrate ( 0.4 %) , zinc sulphate ( 250 ppm)  and borax  (20ppm) at the beginning of false coloring ) during the two seasons of study .  The trees sprayed with humic acid at 4 liter/fad. and mixture of  calcium nitrate (0.4 %), zinc sulphate (250 ppm) and borax  (20 ppm) at beginning  of true  coloring  and the end  of false coloring on Apple fruits (T4 and T5) gave significant increase of fruit firmness in both  seasons as  compared to other tested  treatments 

DOI

10.21608/jpp.2015.49321

Keywords

Apple, humic, fulvic acids, calcium, zinc and boron, yield, firmness and time of application

Authors

First Name

M.

Last Name

El-Boray

MiddleName

S. S.

Affiliation

Pomology Dept, Fac. Agric., Mansoura Univ.

Email

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City

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Orcid

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First Name

M.

Last Name

Mostafa

MiddleName

F. M.

Affiliation

Pomology Dept, Fac. Agric., Mansoura Univ.

Email

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City

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Orcid

-

First Name

M.

Last Name

Abd El-Galel

MiddleName

M.

Affiliation

Hort. Res. Inst. Agric. Res. Center

Email

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City

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Orcid

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First Name

I.

Last Name

Somaa

MiddleName

A. I.

Affiliation

Hort. Res. Inst. Agric. Res. Center

Email

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City

-

Orcid

-

Volume

6

Article Issue

3

Related Issue

7646

Issue Date

2015-03-01

Receive Date

2019-09-24

Publish Date

2015-03-01

Page Start

307

Page End

321

Print ISSN

2090-3669

Online ISSN

2090-374X

Link

https://jpp.journals.ekb.eg/article_49321.html

Detail API

https://jpp.journals.ekb.eg/service?article_code=49321

Order

4

Type

Original Article

Type Code

887

Publication Type

Journal

Publication Title

Journal of Plant Production

Publication Link

https://jpp.journals.ekb.eg/

MainTitle

EFFECT OF HUMIC AND FULVIC ACIDS WITH SOME NUTRIENTS AT DIFFRENET TIME OF APPLICATION ON YIELD AND FRUITS QUALITY OF ANNA APPLE TREES

Details

Type

Article

Created At

22 Jan 2023