Effect of Nitrogen Fertilization and Seed Contamination on Epiphytic Populations of <i>Xanthomonas axonopodis</i> pv. <i>allii</i> and Development of Xanthomonas Leaf Blight of Onion

Fig. 1. Xanthomonas leaf blight symptoms on the flattened sides of onion leaves with characteristic water-soaked lesions from infection by Xanthomonas axonopodis pv. allii.



Image from Plant Health Progress article:
Effect of Nitrogen Fertilization and Seed Contamination on Epiphytic Populations of Xanthomonas axonopodis pv. allii and Development of Xanthomonas Leaf Blight of Onion