Assessment of the Relationship between Actual Evapotranspiration, Reference Evapotranspiration and Precipitation (A case study of Tono Irrigation Scheme)

Authors

  • Adams Sadick  Soil Chemistry and Mineralogy, Soil Research Institute, Kumasi, Ghana
  • Ekow Gaisie  Soil and Water Conservation, Soil Research Institute, Kumasi, Ghana
  • Eric Owusu Adjei  Directorate, Soil Research Institute, Kumasi, Ghana
  • Kennedy Agyeman  Resource and Crop Management, Crops Research Institute, Kumasi, Ghana
  • Kwabena A. Nketia  Soil Genesis, Survey and Survey Division, Soil Research Institute, Kumasi, Ghana
  • Eric Asamoah   Soil Genesis, Survey and Survey Division, Soil Research Institute, Kumasi, Ghana

Keywords:

Evapotranspiration, Hydrological Cycle, Irrigation, Geographical Information System, Remote Sensing

Abstract

The study was carried out to assess the relationship between actual evapotranspiration, reference evapotranspiration and precipitation in the effect of optimum planting date of crops in the Tono irrigation area. The Surface Energy Balance System (SEBS) and Penman Monteith method were used to estimate actual and reference evapotranspiration and other energy fluxes in the monthly and seasonal time steps using climatic parameters. The rainfall data was obtained from the office of meteorological station in Navrongo, Ghana. The study showed that at the peak of the rainy season where there is abundant of moisture in the soil, ETa rate equals ETo. When the moisture content in the soil is limited as a result of insufficient rainfall and the crops unable to absorb water from the soil, the ETa becomes lower than ETo. Precipitation was much higher than ETo in the month of April which was the optimum planting date of most crops and October.

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International Journal of Scientific Research in Science and Technology

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Published

2015-12-25

Issue

Volume 1, Issue 5, November-December-2015

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Research Articles

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How to Cite

[1]
Adams Sadick, Ekow Gaisie, Eric Owusu Adjei, Kennedy Agyeman, Kwabena A. Nketia, Eric Asamoah , " Assessment of the Relationship between Actual Evapotranspiration, Reference Evapotranspiration and Precipitation (A case study of Tono Irrigation Scheme), International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 1, Issue 5, pp.307-317, November-December-2015.