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98898

HYDRAULIC CONDUCTIVITY AND DIFFUSIVITY AS CALCULATED FOR WATER FILLED PORES IN CULTIVATED CLAY SOILS

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Last updated: 04 Jan 2025

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Abstract

The aim of this study was to propose equations to estimate unsaturated hydraulic conductivity, K(θ)[LT--1],, water diffusivity, D(θ) [L2T-1], intrinsic permeability, k [L2 ] and water flow, ,q[L3T-1 ] in plant-root zone. Also an equation for predicting so called potential conductivity of soil water filled pores Kp(θ) [M L-1T-3] (erg. cm-3.sec-1 or joule. m-3 sec-1) was derived for each pore size class. Three alluvial clay soils located at middle and northern Nile Delta were used to apply the assumed equations. The first soil was uncultivated and the other two soils were cultivated with cotton yield during 2009 season. The soil profiles were different in their salinity, clay % and source of irrigation water. The equations which assumed to predict soil water movement parameters considered only the matric potential as a driving force in capillary pores, and gravitational potential that is critical for the large, non-capillary pores. Data of pore size distribution were obtained for the investigated soil profiles using water retention data. The calculated K(θ), D(θ) and k values were conformable to the common measured ranges, indicating the applicability of the proposed equations for predicting water movement parameters in agricultural clay soils.

DOI

10.21608/mjae.2014.98898

Keywords

Hydraulic Conductivity, intrinsic permeability, diffusivity, conductivity potential, soil pore classes, cultivated clay soils

Authors

First Name

Abdelmonem M.

Last Name

Amer

MiddleName

-

Affiliation

Soil Science Dept., Faculty of Agriculture, Menoufia University, 32511Shebin EI-Kom, Egypt.

Email

amer_abdel@hotmail.com

City

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Orcid

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First Name

William

Last Name

DeTar

MiddleName

-

Affiliation

17053 Shafter Avenue, Shafter, CA 93263, USA

Email

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City

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Orcid

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First Name

Amal F.

Last Name

El-Sharkawy

MiddleName

-

Affiliation

Agricultural Engineering Institute, Ministry of Agriculture, Dokki, Giza, Egypt.

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Orcid

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Volume

31

Article Issue

3

Related Issue

14934

Issue Date

2014-07-01

Receive Date

2020-06-28

Publish Date

2014-07-01

Page Start

799

Page End

816

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 31_Issue 3_Pages 799-816.pdf

PDF . 958.9kB

Link

https://mjae.journals.ekb.eg/article_98898.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=98898

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6

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

HYDRAULIC CONDUCTIVITY AND DIFFUSIVITY AS CALCULATED FOR WATER FILLED PORES IN CULTIVATED CLAY SOILS

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Article

Created At

23 Jan 2023