Increasing Outbreaks and Impact of <i>Iris yellow spot virus</i> in Bulb and Seed Onion Crops in the Imperial and Antelope Valleys of California

Fig. 1. Symptoms of Iris yellow spot virus infection on onion scapes collected from commercial onion fields in Imperial County, California in 2005.



Image from Plant Health Progress article:
Increasing Outbreaks and Impact of Iris yellow spot virus in Bulb and Seed Onion Crops in the Imperial and Antelope Valleys of California