1 | Powdery mildew, for example, evolved in North America. | |
2 | Resistance to mildew, powdery mildew, virus disease disease. | |
3 | The vines are hardy and vigorous but susceptible to powdery mildew. | |
4 | The powdery mildew fungus is one of a number of major grape diseases | |
5 | St. Croix has vigorous growth and good resistance to powdery mildew and black rot. |