Blight—Fungal Infections of
Garden and Agricultural Plants

There are many types affecting blight, most of which are fungal infections caused by damp, cool conditions.

These blight infections include the following varieties:

Alder—caused by the woolly alder aphid (a plant louse)

Apple (called apple canker)—affecting apple trees

Beet—affecting beet plants

Blister—affecting tea plants

Blister—affecting Scotch pines

Cane—affecting the canes of various bush fruits (e.g., raspberries, currants)

Chestnut (called chestnut canker or chestnut-bark disease)—affecting American chestnut trees

Coffee—affecting the coffee plant

Collar—affecting the trunks of pear and apple trees

Halo, halo spot, bean—affecting bean plants

Halo—affecting the leaves of oats and other grasses

Head—affecting the heads of cereals

Late—in which symptoms appear late in the growing season, especially a disease of solanaceous plants caused by the fungus Phytophthora infestans

Leaf—any that cause a browning and falling of the leaves of a plant

Peach—affecting trees bearing drupes

Potato, potato mold, potato disease, potato mildew, potato murrain—affecting potatoes

Rim—affecting tea plants

Spinach—affecting spinach plants

Spur—affecting raspberries

Stem—affecting the stems of plants

Stripe—affecting oats

Thread—affecting tropical woody plants (cocoa or tea or citrus)

Tomato, tomato yellows—affecting tomato plants

Twig—affecting the ends of twigs of woody plants

Walnut—affecting English walnut trees

Normally the shoots, along with other younger, rapidly growing cells of a plant are assaulted. The majority of blights come from microbial or fungus contaminations, however they can also happen from dryness. Fungal and microbial infections are all likely to happen in cold, damp circumstances. The majority of economically essential plants is vulnerable to a number of blights.

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