Next Article in Journal
How Does Good Governance Relate to Quality of Life?
Next Article in Special Issue
Modeling of Turbidity Variation in Two Reservoirs Connected by a Water Transfer Tunnel in South Korea
Previous Article in Journal
Soil Respiration Response to Long-Term Freezing Saline Water Irrigation with Plastic Mulching in Coastal Saline Plain
Previous Article in Special Issue
Household Smart Water Metering in Spain: Insights from the Experience of Remote Meter Reading in Alicante
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Sustainability 2017, 9(4), 630; doi:10.3390/su9040630

Identifying Irrigation Strategies for Improved Agricultural Water Productivity in Irrigated Maize Production through Crop Simulation Modelling

1
Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, 1 Shuefu Rd., Pingtung 912, Taiwan
2
Department of Civil Engineering, National Pingtung University of Science and Technology, 1 Shuefu Rd., Pingtung 912, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Marc A. Rosen
Received: 9 February 2017 / Revised: 6 April 2017 / Accepted: 13 April 2017 / Published: 17 April 2017
(This article belongs to the Special Issue Sustainable Water Resources Management)
View Full-Text   |   Download PDF [1365 KB, uploaded 18 April 2017]   |  

Abstract

Identifying irrigation strategies that improve agricultural water use efficiency (WUE) have a pivotal role to play in sustainable water development. In this study, the AquaCrop model was used to examine the impact of different irrigation scheduling options on yields to identify viable strategies to enhance WUE for irrigated maize. Two scheduling scenarios at water application depths ranging from 20 to 50 mm were investigated: schedules based on allowable depletion of total available water (TAW) in the root zone and interval schedules based on irrigating at predefined daily intervals. For both scenarios, simulated yields, seasonal water applied and percent percolation loss were within the range of 9.16 to 10.22 ton/ha, 180 to 950 mm and 0–61%, respectively. The WUE in terms of water applied (WUEIrr) and crop evapotranspiration (WUEET) ranged from 1.07 to 5.48 kg/m3 and 2.42 to 4.42 kg/m3, respectively. The results revealed that depletion levels of 40–50% TAW at water depths of 20–40 mm could be used to obtain high WUE without significant yield penalty. Moreover, a good balance between yield, improved WUEET and percolation reduction was observed at water depths of 30–40 mm for daily intervals with water applied during the vegetative-reproductive stage of 7–5, 10–5 and 10–7. The identified strategies can contribute to the development of best management practices for water conservation. View Full-Text
Keywords: water use efficiency; AquaCrop; irrigation schedules; maize; water conservation water use efficiency; AquaCrop; irrigation schedules; maize; water conservation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Greaves, G.E.; Wang, Y.-M. Identifying Irrigation Strategies for Improved Agricultural Water Productivity in Irrigated Maize Production through Crop Simulation Modelling. Sustainability 2017, 9, 630.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sustainability EISSN 2071-1050 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top