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197601

POTASSIUM STATUS AND ITS EXTRACTION FREE ENERGY IN SOME NEWLY RECLAIMED SOILS AT UPPER EGYPT

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Last updated: 28 Dec 2024

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Abstract

Eight surface soil samples (0-30 cm) were selected from some
newly reclaimed soils at Kom Ombo and Halaib & Shalateen areas,
Upper Egypt, Egypt to identify K status and free energy of extracted
K amounts. The obtained data reveal that the amounts of soluble
and exchangeable K ranged between 0.006-0.286 and 0.12-1.65 m
molc/100 g soil, respectively. Also, the corresponding K amounts
take place a similar parallel trend to each of soil salinity level and
the content of clay fraction, respectively.
The CaCl2 extractable K contents from the soil samples under
consideration ranged between 0.39-0.13 and 0.05-0.02 me/100 g
soil at the first and last extractions, respectively. These obtained
data show a greater depletion between the fine and coarse textured
soils. In addition, free energy values (Δ F) of K extractions were
calculated, and the obtained results indicate that the released K
amounts from the studied soils are insufficient to cover K
requirements for grown plants, and in turn these soils are in need to
be fertilized with K, particularly upon the prevailing extensive
cropping patterns.

DOI

10.21608/fjard.2006.197601

Keywords

K status, free energy of extracted K, soils of Upper Egypt

Authors

First Name

Magdy H.

Last Name

Khider

MiddleName

-

Affiliation

Soils, Water and Environ. Institute, Agric. Res. Center, Giza, Egypt

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Orcid

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Volume

20

Article Issue

2

Related Issue

27952

Issue Date

2006-07-01

Receive Date

2021-10-03

Publish Date

2006-07-01

Page Start

211

Page End

215

Print ISSN

1110-7790

Online ISSN

2805-2528

Article File

FJARD_Volume 20_Issue 2_Pages 211-215.pdf

PDF . 397.8kB

Link

https://fjard.journals.ekb.eg/article_197601.html

Detail API

https://fjard.journals.ekb.eg/service?article_code=197601

Order

17

Type

Research articles.

Type Code

1,920

Publication Type

Journal

Publication Title

Fayoum Journal of Agricultural Research and Development

Publication Link

https://fjard.journals.ekb.eg/

MainTitle

POTASSIUM STATUS AND ITS EXTRACTION FREE ENERGY IN SOME NEWLY RECLAIMED SOILS AT UPPER EGYPT

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Article

Created At

23 Jan 2023