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Yield Monitoring
Yield monitors use GPS, GIS, a computer, and sensor technologies to accurately measure the amount of crop harvested at a specific location and time. Yield monitors are installed on harvesting equipment and are used on a variety of crops including corn, wheat, soybeans, sugar beets, potatoes, and cotton. In addition to measuring yield, these systems allow for the recording of crop moisture, elevation, variety, and a number of other harvest variables. Yield monitors use sensors to measure the crops’ mass or volume and are found to be accurate to +/- 3% of actual harvested amounts, but require routine calibration to maintain accuracy. The volume or mass measurements are recorded in the on-board computer to produce indirect yield measurements. GPS provides the field location for each measurement. The location and yield data are recorded onto a storage device and transferred to a desktop AgGIS package for processing, viewing, and analysis. Maps depicting yield variations across fields can be developed and used to provide farm management decisions to improve crop productivity.
Publications
- Considerations for Adopting & Implementing Precision Ag Technologies
- Cotton Yield Maps: Tools for Inceasing Efficiency and Profitability (Dec. 2012)
- Cotton Yield Monitors: The Entrance Exam & Final Exam
- GPS/GNSS Related Terminology
- Introduction to Prescription Maps for Variable-Rate Application
- Yield Monitoring and Mapping
Presentations
- Getting Started with Precision Agriculture
- GPS/GIS Applications for Farming Systems
- Precision Equipment Limitations (2010 ICPA, Denver, CO)
- Yield Monitoring and Mapping
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