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Diseases

Bacterial blight

Bacterial blight causes wilting of seedlings and yellowing and drying of leaves

Bacterial leaf streak

Plants infected with Bacterial Leaf Streak shows browning and drying of leaves. Under severe conditions, this could lead to reduced grain weight

Bacterial sheath brown rot

Sheath brown rot causes rotting in sheaths and grains of mature plants, as well as in seedlings

Bakanae

Bakanae is a seedborne fungal disease. It infects plants through the roots or crowns then grows systemically within the plant

Blast (leaf and collar)

Leaf blast can kill rice plants at seedling stage and cause yield losses in cases of severe infection

Blast (node and neck)

When a node or neck blast infection is present, it can cause plants to develop few or no grains at all

Brown spot

Brown spot is a fungal disease. Its most observable damage are the numerous big spots on the leaves which can kill the whole leaf

False smut

False smut causes chalkiness of grains which leads to reduction in grain weight. It also reduces seed germination

Leaf Scald

Scald is a fungal disease which causes the scalded appearance of leaves

Narrow brown spot

Narrow brown spot can lead to premature death of leaves and leaf sheaths, premature ripening of grains, and in severe cases, lodging of plants

Red stripe

Red stripe causes formation of lesions on leaves. It usually occurs when the plants reach the reproductive stage

Rice grassy stunt

Rice grassy stunt virus reduces yields by inhibiting panicle production

Rice ragged stunt

Rice ragged stunt virus reduces yield by causing partially exerted panicles, unfilled grains and plant density loss

Rice stripe virus disease

Rice stripe virus disease can cause high yield losses when severe epidemics occur. The virus is transmitted mainly by the small brown planthopper

Rice Yellow Mottle Virus

Rice Yellow Mottle Virus (RYMV) is a constraint to rice production in irrigated areas in Sub-Saharan Africa that widely affects yield depending on the variety and the period of infection.

Sheath blight

Leaves infected with sheath blight senesce or dry out and die more rapidly. Young tillers can also be destroyed

Sheath rot

Sheath rot reduces grain yield by retarding or aborting panicle emergence, and producing unfilled seeds and sterile panicles. It also affects grain quality

Stem rot

Stem rot leads to formation of lesions and production of chalky grains and unfilled panicles

Tungro

Rice tungro disease is caused by two viruses and transmitted by leafhoppers. It is one of the most destructive diseases of rice in South and Southeast Asia

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