symptoms
Symptoms
- circleCircular brown or black spots
- circleYellow halos around spots
- circlePremature defoliation
help
Causes
Multiple fungal and bacterial pathogens. Favoured by wet foliage and warm temperatures.
healing
Treatment
Remove affected leaves. Apply appropriate fungicide or bactericide.
shield
Prevention
Water at soil level. Improve air circulation. Practise crop rotation.