Diseases
a) White Rust
- It is a serious disease of radish. It produces a white powdery substance in patches on the underside of the leaves.
- It meanly appears on leaves flowering shoots which get deformed and bear only malformed flowers.
Control measures
- Destroy diseased crop debris.
- Spray diathane Z-78(0.2-0.3%)
- Grow IHR-1-1 cultivar which is resistance to this disease(Asiatic cultivar IHR-1-1)
b) Radish mosaic virus
- It is a viral disease. The symptoms first appear as small, circular to irregular, chlorotic lesions in between and adjacent to the veins.
- Little or no leaf distortions.
- It is transmitted through aphids.
Control measures
- It is transmitted through aphids so control of aphid is necessary.
- Destroy infected plants.
Other diseases of radish:
- Damping off
- Alternaria leaf spot
- Black rot
The details regarding care and management of symptoms and control measures for these diseases are similar to those given for pathogens on cole crops.