Tomato plant affected by leaf spot disease
- Other plant pests & diseases: Pests & diseases
Also called: Cercospora zonata.[1]
This is a fungal disease that shows light brown spots on leaves. The spots dry up and the leaf dies. Pear trees can develop orange-yellow stains that become bumps in autumn.
The disease on a fava bean plant
Some plants that are sensitive to this disease: Currant, bean, chrysanthemum, pea, cereals, pears, leeks, plum, celery, and tomatoes.
Preventive measures: Choose resistant varieties. Practice combination planting. Make sure that your soil is healthy and rich with humus (add good compost, add mulch). Spray with an extract of Valerian flowers or onion peel tea (i don't know how effective this is).
Spray with horsetail tea. Burn the plants and leaves that were affected.
See also
References
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