The outer margins of the black circles are ragged or feathery and they are usually surrounded by a ring of yellow.
45+ Black Spots On Brassica Leaves. Alternaria black spot affects most crucifers in ontario. Fungal infections can also cause black or brown spots on basil plants.
Symptoms Of Black Leaf Spot Disease On Different Brassicas Parts A Download Scientific Diagram from www.researchgate.net
Bacterial and fungal leaf spot can cause black or brown spots on both the upper and lower sides of leaves. It usually occurs on the upper sides of leaves, but can also develop on the undersides. Most people will focus on pseudomonas cichorii or downy mildew infections.
Black spot (blackspot) is one of the most common diseases of rose bushes;
Alternaria black spot of canola. Hi i am new to the forum and new to growing. The spots produce spores which spread to other leaves and plants. Dry rot or black leg is caused by the fungus leptosphaeria maculans.
