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A scalable satellite-based yield mapper

A constraint to progress in agriculture is the lack of reliable data on crop productivity at field or sub-field scales, particularly for small-holder systems. We have developed an approach to providing low-cost estimates based on satellite data, which has been implemented in Google's Earth Engine platform. The figure shows an example of corn yield estimates for some fields in Iowa in 2011, overlaid on an airphoto from the same summer. A paper describing the method, called SCYM (a scalable satellite-based yield mapper), can be found here, and a general description here. We are currently testing this approach for maize systems in Africa and wheat systems in India. 

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