In 2013, we found a progressive increase in the number of Peronospora effusa spores detected in the Salinas Valley. This coincided with an overall increase in the amount of spinach acreage planted. We are continuing to collect spore trap data for P. effusa in 2014.

Back to downy mildew in organic leafy greens

How do these spore traps work?

Where are the traps located?