Even though the actual spider mite can be hard to see with the naked eye, Farm Journal Associate Field Agronomist Missy Bauer says it can be easier to identify the damage done by the pest.
"You’ll look for white speckling on the back of the soybean leaf that can be seen with the naked eye," Bauer says. "Sometimes, you’ll need a field lens to actually see the mites or you can shake them off on a white sheet of paper and if the paper looks like it’s moving, that’s actually the spider mites."
At the Soybean College plot, the demonstration field was infested with spider mites in the days leading up to the event, but a rain could have knocked down the pest off the plant. Watch the video below as Bauer explains how to evaluate damage from spider mites.