Evaluation of water dynamics of contour-levee irrigation system in sloped rice fields in Colombia

A - Papers appearing in refereed journals

Takeda, N., López-Galvis, L., Pineda, D., Castilla, A., Takahashi, T., Fukuda, S. and Kensuke, O. 2019. Evaluation of water dynamics of contour-levee irrigation system in sloped rice fields in Colombia. Agricultural Water Management. 217 (20 May), pp. 107-118.

AuthorsTakeda, N., López-Galvis, L., Pineda, D., Castilla, A., Takahashi, T., Fukuda, S. and Kensuke, O.
Abstract

Contour-levee irrigation system is commonly used for rice cultivation in Latin American and Caribbean countries, but its water dynamics in commercial farm field settings are yet to be fully determined. This study aimed to investigate the water dynamics of the contour-levee irrigation system by analyzing conventional irrigation practices and by quantifying water balance and additionally to examine potential toposequential effects. Field experiments with different irrigation intervals were conducted on three commercial farms in Ibagué, Colombia for two seasons from 2017 to 2018. Irrigation and runoff water flows were constantly measured during the crop cycle using Parshall flumes with water level sensors. Percolation rate and field water table were measured using percolators and piezometers installed along the toposequence. The results showed that conventional irrigation management was highly flexible depending on soil permeability, rainfall, and agronomic factors, not particularly paying attention to ensure the flooded conditions during flowering period. The water balance resulted in the irrigation accounting for 76% of the total water input, whereas the runoff, ET, and percolation accounted for 40%, 21%, and 31% on overall average with considerable variation among the three farms. Percolation rates and duration with standing water did not show a clear and consistent tendency among the toposequential positions, but the percolation rate was significantly different among the farms corresponding to soil permeability. Consequently, clear toposequential effects on the water dynamics or on grain yield were not observed at the study site. To our knowledge, this study is the first to elucidate detailed water dynamics of contour-levee irrigation system in farm fields including toposequential difference.

KeywordsColombia; Contour-levee irrigation system; Rice; Toposequential effects; Water balance
Year of Publication2019
JournalAgricultural Water Management
Journal citation217 (20 May), pp. 107-118
Digital Object Identifier (DOI)doi:10.1016/j.agwat.2019.02.032
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeS2N - Soil to Nutrition - Work package 2 (WP2) - Adaptive management systems for improved efficiency and nutritional quality
Publisher's version
File Access Level
Restricted
Accepted author manuscript
Copyright license
CC BY-NC-ND
Output statusPublished
Publication dates
Online02 Mar 2019
Print20 May 2019
Publication process dates
Accepted16 Feb 2019
Copyright licensePublisher copyright
PublisherElsevier Science Bv
ISSN0378-3774

Permalink - https://repository.rothamsted.ac.uk/item/8wxq8/evaluation-of-water-dynamics-of-contour-levee-irrigation-system-in-sloped-rice-fields-in-colombia

Restricted files

Publisher's version

Under embargo indefinitely

Accepted author manuscript

Under embargo until 02 Mar 2021

2 total views
4 total downloads
2 views this month
1 downloads this month