Summary:
The ability to perform on-farm experiments has been greatly improved with the advent of yield monitoring and differentially-corrected global positioning system (DGPS) equipment. However, care should be exercised when planning a particular experiment to remove sources of variation that might confound the interpretation of the data. In addition, the use of yield monitor data may require more observations or larger loads to adequately capture the random variation in the field. Simple statistical tests, like the t statistic, are appropriate when analyzing paired data such as the side by side split-planter design or strip data from yield monitors.
> download pdf:
Copyright 1996-2012 by Potash & Phosphate Institute. All rights reserved.