ISHS Acta Horticulturae 156: XII Working Party on Greenhouse Cucumbers
DIFFERENT WAYS OF POWDERY MILDEW CONTROL |
| Author: | G. Crüger |
| Abstract:
Powdery mildew on cucumber is caused by the two fungi Erysiphe cichoracearum and Sphaerotheca fuliginea, which can be identified by conidial characters. With the nearly all-year-round-production at some places the powdery mildew fungus easily will reach next years crop, but other ways of overwintering have to be taken into consideration. At the beginning of the year hygienic and cultural practices will result in a delay of primary infections, but later on will loose their chances. In chemical control there should be paid more interest in alternating use of fungicides and an improved spraying technique. Under certain circumstances powdery mildew fungi can be controlled by the parasite Ampelomyces quisqualis. Progress has been achieved in breeding powdery mildew resistant glasshouse cucumbers, though, when compared with standard cultivars, some wishes still are left. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
