Seed Borne Late Blight of Potato

Fig. 6. Effect of potato seed piece treatment on the relationship between inoculum density of seed borne Phytophthora infestans and final emergence in (A) Oregon and (B) Washington. Seed pieces of cultivar Shepody were inoculated with sporangia of US-8 in Oregon and US-11 in Washington and immediately treated with the seed dressing.



Image from Plant Health Progress article:
Seed Borne Late Blight of Potato