Crop yield of rainfed areas in 2008
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Crop yield layer where derived from MODIS gross primary productivity (GPP) layer as a production efficiency model approach that estimates crop growth from intercepted photo synthetically active radiation and light use efficiency derived from the satellite images (Xiao et al., 2005; Waggle et al., 2013).The crop yield was for 2008, which was dry year and hence considered a deficit period based on the annual mean precipitation data at the basin level estimated by SIWI. The rainfed areas were determined based on IWMI’s irrigated and rainfed area mapping procedures. This layer was one of the layers produced for “Supporting Coordination and Cooperation in Water Management in the Euphrates and Tigris Area CPET” project. The project aims to assess the status of water use in agriculture in the Euphrates-Tigress basin, determine and map the agricultural water productivity and identify options for improving it in problem areas of the basin in Turkey, Syria and Iraq.