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Rice Blast

Rice blast is one of the most important diseases of rice, which can cause a significant reduction in yield, and in severe cases, the yield can be reduced by 40% to 50%. The disease occurs in paddy fields all over the world and mainly damages leaves and nodes. It can cause early neck burst of rice and then cause yield reduction.


Seedling Blast: occurs before clover in the way of the seed infection. Disease seedling gray base, the upper brown. If humidity is high, disease would generate a lot of gray and black mildew layer.

Leaf Blast: small, dark green spots appeared on leaves, gradually expanded to fusiform spots. Spots central is gray, brown edges, with pale yellow halo at outside.

Acute type of lesion: on leaves form a nearly round or oval, dark green spots. White spot lesion type: leaves after damaged, will produces small white nearly round spots, does not produce spores.

Occurrence regularity:

1. Pathogens overwinter on diseased straw, rice stumps, and diseased grains, and are the primary source of infection in the following year.

2. The prevalence of rice blast is affected by factors such as climate, variety, cultivation, etc. The bacteria will multiply and infect faster at temperatures around 25°C. Rice is more likely to be infected when the average relative humidity is above 90% or even saturated.


CHICO has accumulated rich experience and could offer the corresponding high-class solutions, e.g.: TRIPO®(Propiconazole 125g/L + Tricyclazole 400g/L SE).

Other Chico Agrochemical Disease Solutions