Abstract
Nonionizing, ultraviolet (UV) radiation is effective for mitigating powdery mildew associated with a variety of crops including strawberry, grapes, rosemary, tomato, rose, and cucumber. The effectiveness of UV radiation depends upon the dose (irradiance x duration), the frequency of dosing, the time of application, and the sensitivity of the crop to UV radiation. Reported here are the results of two laboratory studies examining the impact of UV-C (254 nm) on cucumber and its obligate powdery-mildew-causing pathogen Podosphaeraxanthii. In the first study, doses of UV-C (72 and 144 J m-2) applied every night were more effective at reducing disease severity than dosing everyday. However, leaf area was reduced more following nighttime applications than daytime confirmed in the field, could provide cucumber growers with additional options for controlling powdery mildew without compromising yield.
| Original language | English |
|---|---|
| Pages (from-to) | 40-46 |
| Number of pages | 7 |
| Journal | Plant Health Progress |
| Volume | 21 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2020 |
| Externally published | Yes |
Keywords
- Cucumber
- Light
- Podosphaera xanthii
- Powdery mildew
- UV-C
- Ultraviolet radiation
- Vegetables