What causes sheath blight in rice?
Rice sheath blight disease, caused by the basidiomycetous necrotroph Rhizoctonia solani, became one of the major threats to the rice cultivation worldwide, especially after the adoption of highâyielding varieties.
What is sheath blight disease?
Sheath blight is a fungal disease caused by Rhizoctonia solani. Infected leaves senesce or dry out and die more rapidly, young tillers can also be destroyed. As a result, the leaf area of the canopy can significantly be reduced by the disease.
What is scientific name of sheath blight of rice?
Rice-sheath blight is a disease caused by Rhizoctonia solani (teleomorph is Thanetophorus cucumeris), a basidiomycete, that causes major limitations on rice production in India and other countries of Asia.
How do you control sheath rot?
Apply foliar spray of calcium sulfate and zinc sulfate. Apply a seed treatment fungicide like carbendazim, edifenphos, or mancozeb as seed treatment and foliar spraying at booting stage. Apply a foliar fungicide like benomyl and copper oxychloride as foliar sprays.
What is brown spot of rice?
Brown spot is a fungal disease that infects the coleoptile, leaves, leaf sheath, panicle branches, glumes, and spikelets. Its most observable damage is the numerous big spots on the leaves which can kill the whole leaf. When infection occurs in the seed, unfilled grains or spotted or discolored seeds are formed.
What is the pathogen of sheath blight?
Sheath blight is a soilborne disease caused by the fungus Rhizoctonia solani AG1-IA.
How do you control blight sheath?
Chemical methods
- Control of sheath blight has been mainly through the use of foliar fungicides.
- Carbendazim (1 g/lit), Propiconazole (1ml/lit) may be applied.
- Spraying of infected plants with fungicides, such as Benomyl and Iprodione, and antibiotics, such as Validamycin and Polyoxin, is effective against the disease.
What is Bakanae disease of rice?
Bakanae is a seedborne fungal disease. The fungus infects plants through the roots or crowns. It then grows systemically within the plant. Infected plants are abnormally tall with pale, thin leaves, produce fewer tillers, and produce only partially filled or empty grains.
How do you control the sheath blight of rice?