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Trimble® GreenSeeker Handheld Crop Sensor Update

Trimble® GreenSeeker Handheld Crop Sensor Update. Eric Miller, Jacob Bushong , and Bill Raun NUE Conference August 6 th , 2013. Objective. Develop a small and cost-effective NDVI sensor to duplicate the results of a commercial GreenSeeker sensor (Crain et al., 2012).

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Trimble® GreenSeeker Handheld Crop Sensor Update

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  1. Trimble® GreenSeeker Handheld Crop Sensor Update Eric Miller, Jacob Bushong, and Bill Raun NUE Conference August 6th, 2013

  2. Objective • Develop a small and cost-effective NDVI sensor to duplicate the results of a commercial GreenSeeker sensor (Crain et al., 2012) Picture courtesy of Jared Crain

  3. Handheld sensor’s debut MSRP $495 USD

  4. Issues • Issue #1- 1:1 Relationship with the GreenSeeker • Issue 2: Handheld to handheld reliability

  5. Relationship with the GreenSeeker

  6. Regression model parameters

  7. Fabric evaluation • 3 handheld sensors • Hand #1, Hand #2, and Hand #7 • 1 GreenSeeker (GS) • 9 solid colored 1 x 1 m fabric • 0.91 m above the fabric • 5 second collection time NDVI 0.90 0.05

  8. Fabric evaluation regression = significant to α=0.05

  9. Fabric evaluation stability = significant to α=0.05

  10. Influence on N recommendations

  11. Questions?

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