Wrong Angle If you notice translucent lesions on the leaves of your strawberries, you might be face to face with angular leaf spot

摘要

ANGULAR leaf spot disease in strawberries, caused by the bacterium Xanthomonas fragar-iae, is often confused with common leaf spot and leaf scorch diseases. Once infection is established, little can be done until wet cool conditions subside. SymptomsAnd Signs Water-soaked lesions first appear on the lower surface of leaves, becoming angular as they enlarge. In time, lesions will also be visible on the upper leaf surface as irregular, reddish-brown spots that may be surrounded by a yellow halo. Thesesymptoms are difficult to distinguish from common leaf spot and leaf scorch. One identifying characteristic is the translucent nature of lesions when leaves are held up to a bright light; looking from the backside, light will pass through the angular lesions. Entire leaves and major veins may become infected, giving the leaves a ragged appearance. Berry caps may become infected, darkened, have angular lesions, and are unappealing.