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www.veristech.com. What’s new: OpticMapper Soil sensor status update. www.veristech.com. OpticMapper. NEW for 2010. The Sensor Technology:. Veris Soil EC Veris Soil OM. Two questions about sensors:. Does it work?

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www.veristech.com

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  1. www.veristech.com What’s new: OpticMapper Soil sensor status update
  2. www.veristech.com OpticMapper NEW for 2010
  3. The Sensor Technology: Veris Soil EC Veris Soil OM
  4. Two questions about sensors: Does it work? Does it matter? What input(s) can be managed? Is the information unique—vs. soil surveys, EC maps, etc.?
  5. Sensor stability, repeatability Raw Data Repeatability Mapped on 8-28-2010 & 9-7-2010
  6. Correlation to soil property--OM
  7. Correlation to soil property—low levels of OM KS
  8. Correlation to soil property—low levels of OM GA
  9. Application #1: Population Rx Lab-tested OM varies from 2.1 to 3.4 within the poorest soil type on this field; and from 2.2 to 3.6 within the most productive soil type. 1) Soil varies between soil types—fixing the line placement error 2) sensors show soil as a continuum, providing evidence for varying rates within soil types 3) There are variations across the field for a given soil type.
  10. Application #2: sampling zonesIn devising sampling zones, where have historical productivity and manure applications likely caused soil nutrient variability? SoilEC OM
  11. Application #3: VR Nitrogen The OM on this field ranges from just under 2% to nearly 4%. A nitrogen Rx using the UN-L credit for OM, applied using an OpticMapper map would generate over $40/acre in savings versus no adjustment. And over $10/acre advantage versus a flat 2% OM adjustment. Low N Med N Hi N
  12. Is it unique? On some fields soil texture and soil OM correlate reasonably well, so an EC map would likely suffice. SOIL EC SOIL OM
  13. Is it unique? On many fields soil texture and soil OM show different patterns. (Salinity, low OM clays, black sands) SOIL EC SOIL OM
  14. Is it unique? (EC and red wavelength R²)
  15. Soil Sensor Report: commercial products 2010 Veris best year; record sales on all products EC usage increasing (VR N in northern US/Can, VR corn population, cotton) High-acreage (10,000 ac/yr) pH mapping clients
  16. Soil Sensor Report: VisNIR First 3 sensor mobile platform--Germany Canada—Arctic circle 5 state Veris Research Germany Australia
  17. Soil Sensor Report: VisNIR 5 state Veris Research: long term conservation tillage sites 150 0-60 cm soil cores 573 15 cm sample segments lab-analyzed 800 co-located Vis-NIR-EC-Force probe insertions
  18. Soil Sensor Report: VisNIR Improved nitrogen and energy use efficiency using NIR estimated soil organic carbon and N simulation modeling. Graham, C.J., H.M. van Es, J.J. Melkonian, and D.A. Laird. 2010. In: D.A. Clay and J. Shanahan. GIS Applications in Agriculture – Nutrient Management for Improved Energy Efficiency. pp 301-325, Taylor and Francis, LLC. Infrared sensors to map soil carbon in agricultural ecosystems. McCarty, G.W., Hively, W.D., Reeves, J.B., Lang, M.W., Lund, E., Weatherbee, O. 2010. In: Proximal Soil Sensing, Progress in Soil Science Volume 1. New York, NY: Springer Science. 14:165-176. Evaluation of spectral pretreatments, partial least squares, least squares support vector machines and locally weighted regression for quantitative spectroscopic analysis of soils. Benoit Igne, James B. Reeves, III, Gregory McCarty, W. Dean Hively, Eric Lund, and Charles R. Hurburgh, Jr. Journal of Near Infrared Spectroscopy Volume 18 Issue 3, Pages 167–176 (2010)
  19. Acknowledgement Funding for Vis-NIR development provided by the Small Business Innovation Research programs of the U.S. Departments of Agriculture and Energy veristech.com
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