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96393

SUBSURFACE TRICKLE IRRIGATION SYSTEM EVALUATION AS RELATED TO WATER FLOW IN SOIL AND EMITTER

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Agricultural Irrigation and Drainage Engineering

Abstract

The purpose of this study was to evaluate subsurface trickle irrigation system as related to water flow in soil and emitter  when the discharge of a subsurface emitter becames larger than the soil infiltration intake creating soil back pressure from soil on emitter flow . Field experiments were conducted for 50 m of lateral length φ13.6 inner diameter and 0.5 m spacing was tested under 100 and  150 kPa inlet pressure for  4 and  8 l/h emitter flow rate. Both of them were on soil surface except subsurface emitters that connected to lateral using micro-tube φ 4 mm and set 0.2 m depth from soil surface. Several points were taken into consideration, such as, pressure variation, manufacturing variation, flow rate, hydraulic variation, field emission uniformity ,field uniformity coefficient and wetted distribution area directly after irrigation and soil – water distribution area. They showed that pressure head decreased as lateral length increased. Pressure variation along lateral increased as emitter flow rate increased. pressure head losses increased by the increase of inlet pressure due to increasing emitter flow rate. Furthermore, emitter flow rate decreased in subsurface trickle irrigation compared with surface trickle irrigation, the flow rate decrease has happened because of the increase of soil pressure ( ) at the emitter outlet, also ( ) is very sensitive to the formed spherical cavity radius

DOI

10.21608/mjae.2017.96393

Keywords

Surface trickle lateral, Subsurface trickle lateral, Emitter flow rate -Soil back pressure, uniformity coefficient, emission uniformity, pressure variation - spherical cavity radius

Authors

First Name

K. H.

Last Name

Amer

MiddleName

-

Affiliation

Prof., Ag. Eng. Dept., Fac. of Ag., Menoufia Univ., Egypt.

Email

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City

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Orcid

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First Name

A. A.

Last Name

Samak

MiddleName

-

Affiliation

Lecturer, Ag. Eng. Dept., Fac. of Ag., Menoufia Univ., Egypt.

Email

-

City

-

Orcid

-

First Name

Hend M.

Last Name

Elgamasy

MiddleName

-

Affiliation

Master researcher., Ag. Eng. Dept., Fac. of Ag., Menoufia Univ., Egypt.

Email

-

City

-

Orcid

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Volume

34

Article Issue

4

Related Issue

14442

Issue Date

2017-10-01

Receive Date

2020-06-18

Publish Date

2017-10-01

Page Start

2,103

Page End

2,120

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 34_Issue 4_Pages 2103-2120.pdf

PDF . 1.0MB

Link

https://mjae.journals.ekb.eg/article_96393.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=96393

Order

32

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

SUBSURFACE TRICKLE IRRIGATION SYSTEM EVALUATION AS RELATED TO WATER FLOW IN SOIL AND EMITTER

Details

Type

Article

Created At

23 Jan 2023