Primula vulgaris (syn. P. acaulis, primrose): Blighted plants in aggregated pattern

            Cause: Undetermined

Location: Turkey

When diseased plants appear in discrete clusters, it suggests a soilborne etiology, such a nutrient toxicity or deficiency, a soilborne plant pathogen, or wet soil.

Here, diseased plants are on the downslope or at the lower end of the planting area, which suggests wet or waterlogged soil. Hence, a likely cause of the disease is root rot, caused by a fungal plant pathogen or a Stramenolipa such as Pythium.

Alternatively, splash-dispersed plant pathogens may create such clusters of diseased plants versus aerially dispersed pathogens that can create more random patterns.

Photograph by VATAN AŞKIN

Taken on: January 29, 2015

Tags:

Primula

vulgaris

Turkey

blight

clusters

aggregation « less

Sets appears in: • Spatial aggregation (clusters) • Unknown diseases more » • The Plant Doctor app « less

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