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Small, yellow-orange spots appear on the upper surfaces of the leaves, anytime from April to June. [5] These spots gradually enlarge and turn orange or red and may show concentric rings of color. Drops of orange liquid may be visible on the spots. Later in the season, black dots appear on the orange spots on the upper leaf surface.
Hard spot lesions on an orange host. Hard spots are the most common lesions. They are small, round, and sunken. The average diameter of hard spot lesions ranges from 3–10 mm (.12-.4 in). [13] [14] They have dark red to chocolate brown margins and often have pycnidia in the gray-colored centers. [15] A green halo may be present around the ...
Most commonly Cephaleuros virescens is identified by the leaf spots it causes. Theses leaf spots are an orange-brown rust in color and usually occur entirely on the upper leaf surface, although leaf spots on the undersides of infected leaves have been reported. The spots are fuzzy in texture and approximately 2 cm (0.8 in) in diameter. [2]
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The dark orange spots on your greens may raise alarm bells, but that doesn't mean you have to avoid them. Lettuce with russet spotting is completely safe to eat. No matter how strange it may look ...
Slime flux occurs when a wound is made in a tree trunk through things such as natural growth cracks, frost, insects, birds, lawn mowers, cat scratches, or pruning wounds, which causal bacteria can enter.
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