Just a quick note and pictures to add to our growing catalogue of physiological damage to strawberries and caneberries.
Depicted below are several instances of sunburn and/or heat damage to strawberry. The top two pictures were of a strawberry plant up next to a wall getting full sun during the entire hot spell we had last week, so it is without a doubt it is heat and sun which caused the damage depicted in the pictures below.
These are good features to recognize for the diagnostician in the field.
Author - County Director, Santa Cruz County and Farm Advisor, Strawberries & Caneberries
Heat/sun damage on Sequoia strawberry in pot. Note how much the area in between the veins has been damaged and dried out.
Heat/sun damage on Sequoia strawberry leaves.
Heat/sun damage on fruit. Note similarity of leaf symptoms to the two examples above.
Classic sunburn symptoms - brown, necrotic area on upper side of fruit.