Demonstrating the Handheld NTech GreenSeeker N-sensor

at the 2003 Winter Wheat Conference in Hopkinsville, KY.


Dr. Marvin Stone, agricultural engineer at Oklahoma State University, demonstrates the handheld GreenSeeker developed in conjunction with the OSU Precision Sensing Team and NTech.

Dr. Stone points to the actual sensor and discusses how it emits light and measures the reflectance using the same sensor.
Dr. Lloyd Murdock, UK Extension Agronomist, discusses what the sensor is looking at and how it is using the plant to tell us what it needs in terms of nitrogen.
Here is a view of the sensor from below.  From left to right, there is a sensor that measures the reflectance, a light source, and then the connections back to the IPAQ readout.
Here's a scenic picture of the farm that we were on in Christian County.
And here's a bonus picture, that I just had to through in.  On our trip home, there was a great winter sunset just outside of Bowling Green.

 


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