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Edward, P.G., Huete, A.R., Nagler, P.L. and Nelson, S.G. (2008) Relationship between Remotely Sensed Vegetation Indices, Canopy Attributes and Plant Physiological Processes: What Vegetation Indices Can and Cannot Tell Us about the Landscape. Sensors, 8, 2136-2160. Environment, 48, 119-126.

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• TITLE: Crop Water Requirements in Egypt Using Remote Sensing Techniques

  AUTHORS: Mohammed A. El-Shirbeny, Abd-Elraouf M. Ali, Nasser H. Saleh

  KEYWORDS: Normalized Deference Vegetation Index (NDVI); Reference Evapotranspiration (ETo); Landsat8; Crop Coefficient (Kc); Crop Evapotranspiration (ETc) and Arid Region

  JOURNAL NAME: Journal of Agricultural Chemistry and Environment, Vol.3 No.2B, May 6, 2014

  ABSTRACT: The common Soil in Egypt is clay soil so common irrigation system is tradition surface irrigation with 60% irrigation efficiency. Agricultural sector consumes more than 80% of water resources under surface irrigation (tradition methods). In arid and semi-arid regions consumptive use is the best index for irrigation requirements. A large part of the irrigation water applied to farm land is consumed by Evapotranspiration (ET). Irrigation water consumption under each of the physical and climatic conditions for large scale will be easier with remote sensing techniques. In Egypt, Agricultural cycle is often tow agricultural seasons yearly; summer and winter. Common summer crops are Maize, Rice and Cotton while common winter crops are Clover and Wheat. Landsat8 bands 4 and 5 provide Red (R) and Near Infra-Red (NIR) measurements and it used to calculate Normalized Deference Vegetation Index (NDVI) and monitoring cultivated areas. The cultivated land area was 3,277,311 ha in August 2013. In this paper Kc = 2 * NDVI ? 0.2 represents the relation between crop coefficient (Kc) and NDVI. Kc and Reference evapotranspiration (ETo) used to estimate ETc in Egypt. The main objective of this paper is studying the potential crop Evapotranspiration in Egypt using remote sensing techniques.