Strawberry leaves that appear to be brown are likely suffering from leaf blight. The spots of leaf blight originate as reddish in color, but evolve into a darker brown and soon overtake a large portion of the leaf.
Effects
Leaf blight is particularly destructive to older or weaker plants. The disease can cause the death of leaves and fruit, as well as produce rotting at the stem end of fruit.
Treatment
Prevent weed growth near strawberry plants and apply nitrogen fertilizer to reduce the chance of disease. Apply a fungicide spray to the entire plant in seven- to 10-day intervals to get rid of blight in the plant.
Un fungicid ...Dithane sau Thiovit , rezolva situatia , daca mugurele central nu e afectat de ciuperca
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