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Optimizing irrigation and drainage rates in sri paddy fields

A quantified study to optimize furrow irrigation and drainage rates for SRI paddy fields has been carried out over three different planting seasons. It is very crucial to maintain soil conditions where the water level sustains soil moisture at around saturation and air-entry values. In the present s...

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Main Authors: Setiawan, Budi Indra, Arif, Chusnul, Rudiyanto, Rudiyanto, Askari, Muhamad
Format: Article
Language:English
Published: Penerbit UTM Press 2015
Subjects:
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.utm.my/id/eprint/58732/1/MuhamadAskari2015_OptimizingIrrigationandDrainageRates.pdf
http://eprints.utm.my/id/eprint/58732/
http://dx.doi.org/10.11113/jt.v76.5966
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spelling my.utm.587322021-08-03T08:19:06Z http://eprints.utm.my/id/eprint/58732/ Optimizing irrigation and drainage rates in sri paddy fields Setiawan, Budi Indra Arif, Chusnul Rudiyanto, Rudiyanto Askari, Muhamad TA Engineering (General). Civil engineering (General) A quantified study to optimize furrow irrigation and drainage rates for SRI paddy fields has been carried out over three different planting seasons. It is very crucial to maintain soil conditions where the water level sustains soil moisture at around saturation and air-entry values. In the present study we report on a simulator program which applies a saturated water flow equation in one dimension for which boundary conditions at both ends formed water rates (Neumann type). A spreadsheet optimization using an imbedded Solver in MS Excel was employed alongside the simulation. Daily rainfall, evapotranspiration and percolation rates as sink-source functions were incorporated into the equations. Our study shows that optimizing irrigation and drainage rates gives an effective water level for SRI paddy fields within a range of -5 to 0 cm for all planting seasons. The highest value for irrigation rate within the furrow was about 6 mm per day, while the optimizing drainage rate was about 0.5 mm per day. Water table profiles are significantly affected by planting season. Our study confirmed that conserving drained water from one planting season is desirable to provide sufficient irrigation water for the next planting season. Penerbit UTM Press 2015 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/58732/1/MuhamadAskari2015_OptimizingIrrigationandDrainageRates.pdf Setiawan, Budi Indra and Arif, Chusnul and Rudiyanto, Rudiyanto and Askari, Muhamad (2015) Optimizing irrigation and drainage rates in sri paddy fields. Jurnal Teknologi, 76 (15). pp. 139-145. ISSN 0127-9696 http://dx.doi.org/10.11113/jt.v76.5966 DOI:10.11113/jt.v76.5966
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TA Engineering (General). Civil engineering (General)
spellingShingle TA Engineering (General). Civil engineering (General)
Setiawan, Budi Indra
Arif, Chusnul
Rudiyanto, Rudiyanto
Askari, Muhamad
Optimizing irrigation and drainage rates in sri paddy fields
description A quantified study to optimize furrow irrigation and drainage rates for SRI paddy fields has been carried out over three different planting seasons. It is very crucial to maintain soil conditions where the water level sustains soil moisture at around saturation and air-entry values. In the present study we report on a simulator program which applies a saturated water flow equation in one dimension for which boundary conditions at both ends formed water rates (Neumann type). A spreadsheet optimization using an imbedded Solver in MS Excel was employed alongside the simulation. Daily rainfall, evapotranspiration and percolation rates as sink-source functions were incorporated into the equations. Our study shows that optimizing irrigation and drainage rates gives an effective water level for SRI paddy fields within a range of -5 to 0 cm for all planting seasons. The highest value for irrigation rate within the furrow was about 6 mm per day, while the optimizing drainage rate was about 0.5 mm per day. Water table profiles are significantly affected by planting season. Our study confirmed that conserving drained water from one planting season is desirable to provide sufficient irrigation water for the next planting season.
format Article
author Setiawan, Budi Indra
Arif, Chusnul
Rudiyanto, Rudiyanto
Askari, Muhamad
author_facet Setiawan, Budi Indra
Arif, Chusnul
Rudiyanto, Rudiyanto
Askari, Muhamad
author_sort Setiawan, Budi Indra
title Optimizing irrigation and drainage rates in sri paddy fields
title_short Optimizing irrigation and drainage rates in sri paddy fields
title_full Optimizing irrigation and drainage rates in sri paddy fields
title_fullStr Optimizing irrigation and drainage rates in sri paddy fields
title_full_unstemmed Optimizing irrigation and drainage rates in sri paddy fields
title_sort optimizing irrigation and drainage rates in sri paddy fields
publisher Penerbit UTM Press
publishDate 2015
url http://eprints.utm.my/id/eprint/58732/1/MuhamadAskari2015_OptimizingIrrigationandDrainageRates.pdf
http://eprints.utm.my/id/eprint/58732/
http://dx.doi.org/10.11113/jt.v76.5966
_version_ 1707765846660612096
score 13.211869

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