Sugarbeet Yield Monitoring for Site-Specific Farming Part I–Laboratory Tests and Preliminary Field Tests

Sugarbeet Yield Monitoring for Site-Specific Farming Part I–Laboratory Tests and Preliminary... A site-specific sugarbeet yield monitoring system was developed and tested. Two weight-sensing systems were developed, tested, and evaluated on a laboratory test conveyor. One system used 152 mm (6 in.) idler wheels attached to load cells. The instrumented idlers replaced an existing chain supporting idler on each side of the harvester outlet conveyor. The second system replaced two existing idlers on each side of the harvester outlet conveyor with slide bars covered with UHMW plastic. A product flow rate was obtained from the combined load cell outputs and conveyor speed. Laboratory tests to predict accumulated weight showed a 2.5% error for the slide bar system and a 3.5% error for the idler wheel system. As a result, field testing was performed exclusively with the slide bar weight-sensing system. Calibration was obtained by comparing accumulated truckload weight as indicated by the weight-sensing system to measured gross sugarbeet weight on individual trucks. Typical weight errors ranged from 2% to 3% with an average error of 2.3%. Site-specific yield information was derived from the sugarbeet flow, harvester speed and width, and DGPS receiver. Sugarbeet yield maps were developed as a visual management aid. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Sugarbeet Yield Monitoring for Site-Specific Farming Part I–Laboratory Tests and Preliminary Field Tests

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 2003 by Kluwer Academic Publishers
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1023/A:1026379526456
Publisher site
See Article on Publisher Site

Abstract

A site-specific sugarbeet yield monitoring system was developed and tested. Two weight-sensing systems were developed, tested, and evaluated on a laboratory test conveyor. One system used 152 mm (6 in.) idler wheels attached to load cells. The instrumented idlers replaced an existing chain supporting idler on each side of the harvester outlet conveyor. The second system replaced two existing idlers on each side of the harvester outlet conveyor with slide bars covered with UHMW plastic. A product flow rate was obtained from the combined load cell outputs and conveyor speed. Laboratory tests to predict accumulated weight showed a 2.5% error for the slide bar system and a 3.5% error for the idler wheel system. As a result, field testing was performed exclusively with the slide bar weight-sensing system. Calibration was obtained by comparing accumulated truckload weight as indicated by the weight-sensing system to measured gross sugarbeet weight on individual trucks. Typical weight errors ranged from 2% to 3% with an average error of 2.3%. Site-specific yield information was derived from the sugarbeet flow, harvester speed and width, and DGPS receiver. Sugarbeet yield maps were developed as a visual management aid.

Journal

Precision AgricultureSpringer Journals

Published: Oct 3, 2004

References

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