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plantdiseases.org
- Leaf spots are localized lesions on host leaves consisting of dead and collapsed cells. Blights are general and extremely rapid browning of leaves, branches, twigs and floral organs resulting in their death.
hortsense.cahnrs.wsu.edu/fact-sheet/common-diseases-leaf-spots-and-blights/
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blight, any of various plant diseases whose symptoms include sudden and severe yellowing, browning, spotting, withering, or dying of leaves, flowers, fruit, stems, or the entire plant. Most blights are caused by bacterial or fungal infestations, which usually attack the shoots and other young, rapidly growing tissues of a plant.
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Nov 4, 2022 · Leaf spots are localized lesions on host leaves consisting of dead and collapsed cells. Blights are general and extremely rapid browning of leaves, branches, twigs and floral organs resulting in their death. Leaf spots and blights can be caused by fungi, bacteria, viruses and environmental conditions. Many host plants are affected by leaf spots ...
On leaf tissue, symptoms of blight are the initial appearance of lesions which rapidly engulf surrounding tissue. However, leaf spots may, in advanced stages, expand to kill entire areas of leaf tissue and thus exhibit blight symptoms. Blights are often named after their causative agent.
Potato blight is the most important potato disease in Britain and in fact is of global significance. While blight is often considered a 'fungal' disease, the blight organism itself is not strictly a fungus but is more closely akin to an algae. Like algae it must have a wet environment to survive.
Early blight, late blight, and leaf spot are common fungal diseases of tomato plants. Late blight is the most serious of the three. It spreads rapidly and will likely destroy the infected plant and can quickly spread to other plants—including potatoes, eggplants, and peppers.
May 31, 2023 · Blight refers to a group of plant pathogens that cause plants to undergo chlorosis (yellowing) then browning and then die-off in parts of the plant. The impacted areas could include leaves, branches, flowers, fruits, stalks, seedlings, tubers, etc.
Aug 15, 2020 · Leaf spots are classically thought of as tan to brown, local lesions with distinct borders or delimited borders on leaves or flower parts. When the spots become numerous and begin to touch each other the disease is called a blight or blotch or less commonly, scorch.
