black stem rust

plant disease

Also known as: black rust

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Last updated

June 22, 2026

Quick Summary

Black stem rust is a destructive plant disease caused by the fungus Puccinia graminis. It primarily affects cereals like wheat, as well as other grasses. This disease appears as reddish-brown or black pustules on the stems of plants.12

Black stem rust is a type of stem rust, which is a broader category of plant diseases caused by over 7,000 species of fungi. These rusts typically manifest as powdery pustules on various plant parts, reducing growth and productivity. Control measures include using resistant plant varieties, destroying alternate host plants, and employing fungicides.2

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cereal farming
Fungus diseases
…chief damage is caused by black rust. Because this fungus spends part of its life on cereals and part on the barberry bush, these bushes are often eradicated near wheat fields as a preventive measure. Black rust causes cereal plants to lose their green colour and turn yellow. The grain…
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…chief damage is caused by black rust. Because this fungus spends part of its life on cereals and part on the barberry bush, these bushes are often eradicated near wheat fields as a preventive measure. Black rust causes cereal plants to lose their green colour and turn yellow. The grain…
Read More

rust
…during its life cycle is black stem rust (Puccinia graminis) of wheat and other cereals and grasses. Other heteroecious rusts include cedar-apple rust (Gymnosporangium juniperi-virginianae), which primarily uses Eastern red cedar as one host and various apple and
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…during its life cycle is black stem rust (Puccinia graminis) of wheat and other cereals and grasses. Other heteroecious rusts include cedar-apple rust (Gymnosporangium juniperi-virginianae), which primarily uses Eastern red cedar as one host and various apple and
Read More