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.