Estimation of Evapotranspiration for Crop Water Requirement - Gawala, Romlus;Aboyeji, Sunday
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The main objective of this book is to provide an accurate method to irrigation engineers on how to determine the amount of water to supply to a farm. Accurate estimation of such reduces irrigation costs by a significant margin. The method utilizes Landsat Imagery of Siaya County, Kenya as a specimen study area. Various software such as ArcGIS, ERDAS IMAGINE and ENVI were used to achieve the results of this book. Parameters such as NDVI, reference evapotranspiration, fraction of vegetative cover were established to help compute the actual evapotranspiration. Various weather stations from within…mehr

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Produktbeschreibung
The main objective of this book is to provide an accurate method to irrigation engineers on how to determine the amount of water to supply to a farm. Accurate estimation of such reduces irrigation costs by a significant margin. The method utilizes Landsat Imagery of Siaya County, Kenya as a specimen study area. Various software such as ArcGIS, ERDAS IMAGINE and ENVI were used to achieve the results of this book. Parameters such as NDVI, reference evapotranspiration, fraction of vegetative cover were established to help compute the actual evapotranspiration. Various weather stations from within and from without the study area were used to interpolate the rate of evapotranspiration. This figure is then multiplied by the farm area to establish the volume of water necessary to irrigate and replenish the water lost via evapotranspiration.
Autorenporträt
Ing. Romlus Ochola Gawala ha conseguito un dottorato di ricerca presso l'ARCSSTEE/ONU, in Nigeria. Ha conseguito una laurea in Ingegneria agraria presso l'Università Egerton, in Kenya, registrata dall'Engineers Board of Kenya. Ha conseguito un Master in Matematica e Fisica presso la Chuka University. Ha insegnato alla Siaya Township Sec e al Siaya Institute of Technology. Attualmente è consulente di telerilevamento e GIS.