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. 3. Epiphytic populations of Xanthomonas axonopodis pv. allii strain R-O177 on onion in relation to seed contamination levels planted in 2003 (a) and 2004 (b).



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