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94875

NEW METHODOLOGY FOR ESTIMATING EVAPOTRANSPIRATION AND UPDATING CROP COEFFICIENT FOR RICE IN EGYPT BY SURFACE RENEWAL METHOD

Article

Last updated: 26 Dec 2024

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Tags

Agricultural Irrigation and Drainage Engineering

Abstract

Improving irrigation management needs accurate information and tools to estimate accurate crop-water requirements. At the national level, one of the biggest deficiencies in water-use planning is a lack of continues and updated data sets of evapotranspiration and accurate crop coefficient values. The aim of this study is to evaluate locally, the “Surface Renewal (SR)" method, as an energy balance direct method to estimate crop evapotranspiration (ETc), and upgrade crop coefficients (Kc) of rice crop in Egypt. SR station was installed in the “agricultural production sector" farm in Moshtouhor, at Kaliobia governorate, in order to collect high resolution field observations of energy balance factors of paddy rice field. The data was used to calculate the actual crop evapotranspiration (ETc) and crop coefficient(Kc) of the crop by using the SR method, and comparing the result with the standard values recommended by FAO. The overall RMSE between the ETc-SR and the ETc-FAO was 0.92 mm/day. The error was at the highest level at the initial-season stage, and slightly decreased to reach to 0.48 mm/day by the end of the season. The average value of Kc-SR was 1.17, 1.13 and 1.14 at the initial-season, mid-season and late season stages, respectively. The RMSE between the Kc-SR and the Kc-FAO values were 0.17, 0.10 and 0.03 at the initial-season, the mid-season, and the late-season stages, respectively. The combination of the SR procedure and the simplified surface energy balance equation appears being an affordable alternative to be considered for estimating water use in agriculture. In the other hand, the SR method still need several evaluations, calibration work, in order to be used significantly to upgrade the Kc value for the local crop cultivars in Egypt.

DOI

10.21608/mjae.2019.94875

Keywords

energy balance, water requirements, on-farm irrigation management

Authors

First Name

A.

Last Name

Abo El-Magd

MiddleName

-

Affiliation

Agric. Eng. Res. Inst. (AEnRI), Agric. Res. Center (ARC), Dokki, Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

S. M.

Last Name

Attaher

MiddleName

-

Affiliation

Agric. Eng. Res. Inst. (AEnRI), Agric. Res. Center (ARC), Dokki, Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

R. L.

Last Name

Snyder

MiddleName

-

Affiliation

Land Air Water Resources Dept., Univ. of California, Davis, USA.

Email

-

City

-

Orcid

-

First Name

H. S.

Last Name

Mehawed

MiddleName

-

Affiliation

Agric. Eng. Res. Inst. (AEnRI), Agric. Res. Center (ARC), Dokki, Giza, Egypt.

Email

-

City

-

Orcid

-

First Name

G. H.

Last Name

El-Sayed

MiddleName

-

Affiliation

Agric. Eng. Res. Inst. (AEnRI), Agric. Res. Center (ARC), Dokki, Giza, Egypt.

Email

-

City

-

Orcid

-

Volume

36

Article Issue

4

Related Issue

14308

Issue Date

2019-10-01

Receive Date

2020-06-10

Publish Date

2019-10-01

Page Start

1,075

Page End

1,088

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 36_Issue 4_Pages 1075-1088.pdf

PDF . 766.0kB

Link

https://mjae.journals.ekb.eg/article_94875.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=94875

Order

3

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

NEW METHODOLOGY FOR ESTIMATING EVAPOTRANSPIRATION AND UPDATING CROP COEFFICIENT FOR RICE IN EGYPT BY SURFACE RENEWAL METHOD

Details

Type

Article

Created At

23 Jan 2023