International Journal of Water Resources and Environmental Engineering
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Article Number - C5B33D21381


Vol.5(7), pp. 360-369 , July 2013
DOI: 10.5897/IJWREE2013.0407
ISSN: 2141-6613



Full Length Research Paper

Application of AquaCrop model in deficit irrigation management of cabbages in Keiyo Highlands



Kiptum C. K
  • Kiptum C. K
  • Department of Earth Sciences, University of Eldoret, P. O. Box 1125 Eldoret, Kenya
  • Google Scholar
Kipkorir E. C
  • Kipkorir E. C
  • Department of Civil Engineering, University of Eldoret, P. O. Box 1125 Eldoret, Kenya
  • Google Scholar
Munyao T. M
  • Munyao T. M
  • Department of Earth Sciences, University of Eldoret, P. O. Box 1125 Eldoret, Kenya
  • Google Scholar
J. M. Ndambuki
  • J. M. Ndambuki
  • Department of Civil Engineering, Tshwane University of Technology, Private Bag Pretoria, South Africa
  • Google Scholar







 Accepted: 07 May 2013  Published: 31 July 2013

Copyright © 2013 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Crop growth can be simulated under different water application using simulation models. The main purpose of deficit irrigation is high water productivity with less application of water to plants. In this research, the potential of AquaCrop to simulate the growth of cabbages in Keiyo Highlands (0°22’45’’N and 35°32’9”, 2586 m.a.s.l) under nine different irrigation treatments in the dry season between December to February was studied. Statistical comparisons of observed and simulated biomass showed that R2 = 0.96, Root mean square error (RMSE) = 0.38 tons and coefficient of residuals = -0.17. The results showed that the model overestimated the biomass of cabbages. The model also provided excellent simulation of canopy and yield. In this study water productivity of 17 g/cm2 and Harvest index of 76% were found for cabbages.

 

Key words: Deficit irrigation, AquaCrop, cabbage ‘Riana’ and water productivity.

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APA (2013). Application of AquaCrop model in deficit irrigation management of cabbages in Keiyo Highlands. International Journal of Water Resources and Environmental Engineering, 5(7), 360-369.
Chicago Kiptum C. K, Kipkorir E. C, Munyao T. M and J. M. Ndambuki. "Application of AquaCrop model in deficit irrigation management of cabbages in Keiyo Highlands." International Journal of Water Resources and Environmental Engineering 5, no. 7 (2013): 360-369.
MLA Kiptum C. K, et al. "Application of AquaCrop model in deficit irrigation management of cabbages in Keiyo Highlands." International Journal of Water Resources and Environmental Engineering 5.7 (2013): 360-369.
   
DOI 10.5897/IJWREE2013.0407
URL http://academicjournals.org/journal/IJWREE/article-abstract/C5B33D21381

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