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CHARACTERIZATION OF WATER APPLICATION UNIFORMITY, RUNOFF AND WIND DRIFT EVAPORATION LOSSES UNDER CENTER PIVOT IRRIGATION SYSTEM

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Last updated: 04 Jan 2025

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Abstract

The effect of water distribution uniformity (CU) on crop yield uniformity (CU yield) from a center pivot irrigation system operating under field conditions was analyzed. A field experiment was performed during two seasons (2015), located in Elmina, Alexandria and Ismailia (Egypt), in 31.3, 30.7 and 63ha. respectively plot irrigated with a center pivot system. The objectives of this paper are to study water application uniformity (CU) , run off and wind drift evaporation losses (WDEL) with two types of fixed spray plate sprinklers (FSPS): Senninger (LND-UP3-Inv. wobbler) and Nelson (D3000) both installed at the same height (1.5 m above the ground). Different predictive equations of WDEL were proposed for combinations of the two irrigation systems and the two operation times. Most equations use wind speed alone as an independent variable, although some use relative humidity or combinations of both variables plus air temperature. The results show that For two season, Senninger had higher values of CU (80–85%) than the nelson (75–80%). In sprinkler irrigation, a CU value of around 80% for each types of sprinklers can be sufficient to provide good crop yield uniformity, the mean value of run off 29% from water applied, WDEL were significantly higher with nelson (D3000) than with Senninger (LND-UP3-Inv. wobbler). The lowest WDEL values were registered with ranging from 14 to 19% under winter and summer operation conditions, respectively and mean yield for potato and sugar beet 32.7 and 91.2 ton/ha., respectively. These results were obtained for an average wind speed of 4.4 m/s at summer and 3.5 m/s during the winter   and were normally below 5 m/s.

DOI

10.21608/mjae.2016.97733

Keywords

Center pivot, distribution uniformity, runoff, wind drift evaporation losses

Authors

First Name

A. M.

Last Name

Abed El-Bast

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Affiliation

demonstrator of Agriculture Eng. - Faculty of Agric. - Cairo Univ., Egypt.

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First Name

M. A.

Last Name

Kassem

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Affiliation

Professor of Agriculture Eng. - Faculty of Agric. - Cairo Univ., Egypt.

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Orcid

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First Name

M. E.

Last Name

Abuarab

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Affiliation

Associate Professor of Agriculture Eng. - Faculty of Agric. - Cairo Univ., Egypt.

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Volume

33

Article Issue

3

Related Issue

14762

Issue Date

2016-07-01

Receive Date

2020-06-24

Publish Date

2016-07-01

Page Start

821

Page End

848

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 33_Issue 3_Pages 821-848.pdf

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Link

https://mjae.journals.ekb.eg/article_97733.html

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https://mjae.journals.ekb.eg/service?article_code=97733

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Original Article

Type Code

1,326

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Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

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

MainTitle

CHARACTERIZATION OF WATER APPLICATION UNIFORMITY, RUNOFF AND WIND DRIFT EVAPORATION LOSSES UNDER CENTER PIVOT IRRIGATION SYSTEM

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Article

Created At

23 Jan 2023