Which of the following is NOT a factor affecting the accuracy of yield data?

The factor that does not influence the accuracy of yield data in agricultural yield monitoring is the color of the crop. The color of crops does not impact the physical properties or the measurement of yield, which is primarily determined by the harvested biomass and the efficiency of the equipment used during harvest.

In contrast, soil moisture levels play a critical role in crop development and ultimately yield potential. If soil moisture is inadequate or excessive, it can lead to reduced crop yield, which could skew the yield data.

Monitor calibration frequency is crucial for ensuring that the yield monitors are accurately measuring the flow of grain or other harvested materials. An infrequent calibration can result in systematic errors, making the yield data less reliable.

Equipment age and condition can also significantly affect accuracy. Older or poorly maintained equipment may not function optimally, which could lead to inaccurate yield measurements due to malfunctions or outdated technology.

So, while factors such as soil moisture levels, calibration frequency, and equipment condition directly correlate with the accuracy of yield readings, the color of the crop does not have a similar impact.