sheath blight of rice in hindi

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 blight of rice?

Rice bacterial blight, also called bacterial blight of rice, deadly bacterial disease that is among the most destructive afflictions of cultivated rice (Oryza sativa and O. glaberrima). In severe epidemics, crop loss may be as high as 75 percent, and millions of hectares of rice are infected annually.

What is the causal agent of sheath blight?

Sheath blight is a soilborne disease caused by the fungus Rhizoctonia solani AG1-IA. The fungus belongs to the phylum Basidiomycota, family Ceratobasidiaceae.

What is Khaira disease of rice?

Khaira disease of rice is caused due to deficiency of(1) Boron deficiency(2) Zinc deficiency(3) Magnesium deficiency(4) All of the above. The deficiency of zinc in rice causes khaira disease. They existed as smaller patches in the nursery or might be observed in the main-land of rice. The leaves are discoloured.

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.

How do you control bacterial leaf blight?

Preventive method

Seed treatment with bleaching powder (100g/l) and zinc sulfate (2%) reduce bacterial blight.
Seed treatment - seed soaking for 8 hours in Agrimycin (0.025%) and wettable ceresan (0.05%) followed by hot water treatment for 30 min at 52-54oC;

How do you control bacterial leaf blight of rice?

Keep fields clean. Remove weed hosts and plow under rice stubble, straw, rice ratoons and volunteer seedlings, which can serve as hosts of bacteria. Allow fallow fields to dry in order to suppress disease agents in the soil and plant residues.

How do you control rice disease?

The four most important strategies for rice disease management are to rotate crops, plant resistant varieties, plant in warm soil and use fungicides when necessary.
...
To minimize this disease:

Plant clean seed.
Treat seed with a fungicide.
Avoid late planting.
Apply Tilt at boot.
Apply recommended rates of nitrogen.

How do you control BLB in rice?

Antibiotics, Agrimycin 100, Agrimycin 500, Agric. Terramycin 17, A.S. 50 and Streptocycline, and fungicides, Brestanol, Fytolan and Vitavax, were evaluated under field conditions for control of bacterial leaf blight of rice caused by Xanthomonas oryzae. Agric.

What is leaf sheath?

noun. botany the basal part of a grass leaf that encircles the stem.

What causes rice blast?

Pathogen Biology. The fungus that causes rice blast is called Magnaporthe oryzae (formerly Magnaporthe grisea) (Figure 9). It is an ascomycete because it produces sexual spores (ascospores) in structures called asci, and is classified in the newly erected family Magnaporthaceae.

What is Tungro disease?

Rice tungro disease is caused by the combination of two viruses, which are transmitted by leafhoppers. It causes leaf discoloration, stunted growth, reduced tiller numbers and sterile or partly filled grains. Tungro infects cultivated rice, some wild rice relatives and other grassy weeds commonly found in rice paddies.

WHO reported Khaira disease first time?

During his 14-year tenure at Pantnagar, Nene's work on “Khaira Disease of Paddy” was recognized internationally because the cause of disease was established to be zinc deficiency in field rice, which was the first such report in the world.

Who discovered Khaira disease of rice?

Dr. Y.L. Nene discovered the control over the 'Khaira disease' of rice.

Which state of India is the highest producer of rice?

Production(000 Tonnes)

Sr No.	State	Production
		2017-18
1	West Bengal	14,970.00
2	Punjab	13,380.00
3	Uttar Pradesh	13,270.00

What is neck blast?

Blast is caused by the fungus Magnaporthe oryzae. It can affect all above ground parts of a rice plant: leaf, collar, node, neck, parts of panicle, and sometimes leaf sheath. ... When a node or neck blast infection is present, it can cause plants to develop few or no grains at all.

What is brown spot of rice?

Brown spot of rice is a plant fungal disease that usually occurs on the host leaves and glume, as well as seedlings, sheaths, stems and grains of adult host plants. ... Oval-shaped brown spots are the fungal growth sign, which have grey colored center developed on host leaves.

Which one of the following is downy mildew fungus?

Cucurbitaceae downy mildew (caused by Pseudoperonospora cubensis) is specific to cucurbits (e.g., cantaloupe (Cucumis melo), cucumber (Cucumis sativus), pumpkin, squash, watermelon (Citrullus lanatus) and other members of the gourd family). The disease is one of the most significant diseases of cucurbits worldwide.

What is bacterial blight disease?

Bacterial blight is a widespread soybean disease that is most common during cool, wet weather. This disease usually occurs at low levels that don't result in yield loss. Bacterial blight can be mistaken for Septoria brown spot.

What are the symptoms of anthracnose?

Symptoms include sunken spots or lesions (blight) of various colours in leaves, stems, fruits, or flowers, and some infections form cankers on twigs and branches. The severity of the infection depends on both the causative agent and the infected species and can range from mere unsightliness to death.

How do you treat bacterial wilt?

Treatment and Control of Bacterial Wilt

Rotate your crops regularly.
Install raised beds.
Space plants out evenly to improve air circulation.
Test soil and amend to a pH of 6.2 to 6.5 for tomatoes and most garden vegetables.
Wash hands and gardening tools after handling infected plants.