| Autor: |
Head, Jason C., Wilkerson, John B., Hart, William E., Allen, Philip B. |
| Zdroj: |
Proceedings of the Beltwide Cotton Conferences: Cotton Engineering-Systems Conference; Jan2009, p374-377, 4p, 3 Charts |
| Abstrakt: |
A Cotton Yield Monitor is a valuable tool for collecting yield map data and making precision farming decisions on a production scale. Researchers have shown an interest in using cotton yield monitors rather than a weighing boll buggy or other weighing mechanism to collect data from production scale variety trials. This will simplify and increase efficiency of harvesting large plots. However, current recommendations suggest that the cotton yield monitor should be recalibrated between varieties. In a variety trial there can be numerous varieties within a field which would require numerous, time consuming calibrations that make data collection using a cotton yield monitor less appealing. Additionally, the new cotton picker designs that incorporate module building capabilities significantly increases the size of the smallest measureable unit of cotton; essentially, one module will be the smallest unit that can be weighed. This will make production scale research solely reliable on the cotton yield monitor once these pickers become popular among producers. This research has tested many environmental and varietal variables to identify potential sources of error in the Ag Leader cotton yield monitor. A total of 106 loads were harvested and weighed (1842 lb average weight) in 2008 at the University of Tennessee Research and Education Center (REC) at Milan. Several recalibration techniques were applied to the data. Without recalibration the average absolute error was 7.2% and the third method of calibration had an average absolute error of 3.8%. Moisture and yield were shown to have a statistically significant effect on monitor error. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
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