Ann. Tabac, 1987, Sect. 2-21, p. 5-12., ISSN.0399-0354
The powdery mildew of tobacco in France
SEITA, Institut du Tabac, Bergerac, France
In France, the powdery mildew disease of tobacco (Erysiphe cichoracearum D.C.) seems to be an increasing problem since 1982. However, a survey made from 1983 to 1985 shows that the disease incidence is relatively low (under 1% of total acreage) and...