Evaluation of an on-combine wheat protein analyzer on Montana hard red spring wheat

D. Long; T. Rosenthal

Evaluation of an on-combine wheat protein analyzer on Montana hard red spring wheat

In: Precision Agriculture â05

Authors:

D. Long

D. Long ¹USDA-ARS, Pendleton, Oregon 97801, USA

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T. Rosenthal

T. Rosenthal ²Zeltex, Inc., Hagerstown, Maryland 21740, USA

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Type:: Chapter

Pages:: 385â392

DOI:: https://doi.org/10.3920/978-90-8686-549-9_048

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The objective of this study was to evaluate a new optical near infrared transmitter analyzer for automatically sensing the protein concentration of wheat on a combine during actual harvest. In 2004, the Zeltex AccuHarvest Analyzer was mounted on the clean grain elevator of a Case IH combine harvester and linked with GPS. The protein content of spring wheat was then measured and mapped in two dryland fields in northern Montana, USA. At the same time, grain samples were collected on the AccuHarvest during actual harvest and saved for whole grain laboratory analysis. Calibration results of linear regression showed sensor-based measurements of grain protein to be correlated with reference measurements of grain protein (R² = 0.86, SEP = Â±0.49%). Grain protein could be predicted to within 0.66% when the calibration model was applied to a validation dataset. Interpolated maps of sensed- and referenced-protein were visually related. These results are sufficiently promising to suggest that on-combine spectroscopic sensing for mapping purposes is technically feasible.

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Precision Agriculture â05

E-Book ISBN:: 9789086865499

Publisher:: Wageningen Academic

Print Publication Date:: 24 Oct 2005

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- Life Sciences
  - General
  - Agriculture & Environment

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Evaluation of an on-combine wheat protein analyzer on Montana hard red spring wheat

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