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Fluid Journal : Fluid Journal 2008-2009
harvesting the research to assure that the yield monitor is recording within 1 to 2 percent of the true yield. In the case where multiple combines are in use, it is best to use a single combine when harvesting on-farm research to simplify the analysis of data and eliminate potential variability from different monitoring systems. Data analysis. The unprocessed yield monitor data taken directly from the card are preferred. If the yield data are first processed by the farmer's mapping program or a yield mapping service, it is possible to unintentionally filter out important data. Once the yield monitor data have been downloaded, processed, and cleaned, they are merged with the N as-applied map. At that time, yield data points can be discarded where there is a significant discrepancy between the target fertilizer rate and the actual applied rate. The remaining yield data are summarized and the response function for each stamp can be modeled as shown in Figure 6. Conclusion While the previous example is only one of several different protocols that can be used with precision agriculture technologies, it demonstrates the importance in providing education and guidance to farmers and dealers to successfully evaluate new products in the future. Wiebers is agronomy research lead, Dr. Ruffo is global data analyst, and Fairchild is assistant vice president of Agronomy with The Mosaic Company, Plymouth, MN.
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