Next Article in Journal
Morphometric Change Detection of Lake Hawassa in the Ethiopian Rift Valley
Next Article in Special Issue
Simulation of Crop Growth and Water-Saving Irrigation Scenarios for Lettuce: A Monsoon-Climate Case Study in Kampong Chhnang, Cambodia
Previous Article in Journal
Objectives and Indexes for Implementation of Sponge Cities—A Case Study of Changzhou City, China
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Water 2018, 10(5), 624; https://doi.org/10.3390/w10050624

Year-Round Irrigation Schedule for a Tomato–Maize Rotation System in Reservoir-Based Irrigation Schemes in Ghana

1
Department of Ecology and Natural Resources Management, Center for Development Research, University of Bonn, Genscherallee 3, 53113 Bonn, Germany
2
CSIR-Soil Research Institute, Academy Post Office, Private Mail Bag, Kwadaso-Kumasi, Ghana
3
Department of Geography, University of Bonn, Meckenheimer Allee 166, 53115 Bonn, Germany
4
Division of Environmental Science and Ecological Engineering, College of Life Science and Biotechnology, Korea University, 145 Anam-Ro, Seongbuk-Gu, Seoul 02841, Korea
*
Author to whom correspondence should be addressed.
Received: 23 March 2018 / Revised: 30 April 2018 / Accepted: 8 May 2018 / Published: 10 May 2018
(This article belongs to the Special Issue Water Management for Sustainable Food Production)
View Full-Text   |   Download PDF [4082 KB, uploaded 18 May 2018]   |  

Abstract

Improving irrigation management in semi-arid regions of Sub-Saharan Africa is crucial to respond to increasing variability in rainfall and overcome deficits in current irrigation schemes. In small-scale and medium-scale reservoir-based irrigation schemes in the Upper East region of Ghana, we explored options for improving the traditional, dry season irrigation practices and assessed the potential for supplemental irrigation in the rainy season. The AquaCrop model was used to (i) assess current water management in the typical tomato-maize rotational system; (ii) develop an improved irrigation schedule for dry season cultivation of tomato; and (iii) determine the requirement for supplemental irrigation of maize in the rainy season under different climate scenarios. The improved irrigation schedule for dry season tomato cultivation would result in a water saving of 130–1325 mm compared to traditional irrigation practices, accompanied by approximately a 4–14% increase in tomato yield. The supplemental irrigation of maize would require 107–126 mm of water in periods of low rainfall and frequent dry spells, and 88–105 mm in periods of high rainfall and rare dry spells. Therefore, year-round irrigated crop production may be feasible, using water saved during dry season tomato cultivation for supplemental irrigation of maize in the rainy season. View Full-Text
Keywords: AquaCrop model; capillary rise; climate change; rainfall variability; supplemental irrigation AquaCrop model; capillary rise; climate change; rainfall variability; supplemental irrigation
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).

Share & Cite This Article

MDPI and ACS Style

Sekyi-Annan, E.; Tischbein, B.; Diekkrüger, B.; Khamzina, A. Year-Round Irrigation Schedule for a Tomato–Maize Rotation System in Reservoir-Based Irrigation Schemes in Ghana. Water 2018, 10, 624.

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]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top