रोग व्यवस्थापन

Rice Blast

Disease resistant varieties or Tolerant varieties like Kanchan, Khumal-2,4,5,6,7,8,9,10,11,13, machhapuchchhre-3, Parwanipur-1, janaki, Khajura-2, Radha-4,7,11,12,13, Hrdinath-1,2, Sukhha-1,2,3,4,5,6, Swarna sub-1 etc should be used.
Use healthy seed only.Do not select seed from diseased field. Maintain wet nursery bed as far as possible.
Do not apply urea fertilizer only but also apply phosphorus & Potassium in balanced amount.
Avoid dense planting of Rice ie. 20 cm * 20 cm and plant only two seedling per hill. Maintain moisture level in the field.
Maintain field sanitation by removing weeds from bunds and around field.
Seed treatment with Carbendazim 50% WP @ 3 gram/kg seed is mandatory before nursery establishment.
Spray Tricyclazole 75% WP @ 2 gram or Carbendazim 50% WP @ 1 gram or Kasugamycin 3% SL @ 1.5 ml/liter at 15 days interval for 2-3 times.

Brown Spot

Plant disease resistant varieties.
This disease prevails in fertilizer deficit condition so apply balanced fertilizer in the field.
Hot water seed treatment: Treat the seed with hot water at 50-55 degree celsius for 10-12 minutes before sowing in nursery.
Seed treatment with Carbendazim 50 WP or Bavistin or Derosal @ 2-3 gram/kg seed before sowing in nursery.
Spray Mancozeb 75% WP @ 3 gram/liter water or Propineb 70 WP @ 3 gram/liter at 15 days interval for 3 times.

Sheath Blight

Do not apply urea fertilizer only but also apply phosphorus & Potassium in balanced amount.
Avoid dense planting.
Spray Validamycin 3 L @ 3 ml/liter water or Pencycuron 23% SC @ 1.5 ml/liter or Carbendazim 50 WP @ 1.5 gram/liter water at 10-12 days interval for 2 times.

Foot Rot Disease

Disease resistant varieties like Taichung, Khumal-1 should be used since severity is very low in these varieties.
Use only healthy seed since disease is seed borne.
Do not select seed from diseased field.
Maintain field sanitation by removing weeds from bunds and around field.
Seed treatment with Carbendazim 50% WP @ 3 gram/kg seed is mandatory before nursery establishment.

Bacterial Blight

Use resistant varieties like Laxmi, Bindeshwori, Janaki, Sabitri, Chaite 2, Chaite 4, Radha-11,12,13, Hardinath-1,2, Sukhha-1,2,3,4.
Use dry nursery beds instead of wet nursery.
Maintain drying in the diseased field for some days. Avoid clipping of seedling.
Do not apply urea fertilizer only but also apply phosphorus & Potassium in balanced amount.
Seed treatment with bactericides Streptomycin sulphate 9%, or Tetracycline hydrochloride 1% or, Agrimycin-100, @ 0.25 gram/liter before nursery establishment.|
Spray filtrate mixture of Fresh cow dung mixed at 50 gram/liter water.
Spray Streptomycin sulphate 9%, Tetracycline hydrochloride 1% @ 0.25 gram/liter in the diseased field.

False Smut

Infected plant debris and remnants should be removed from field to reduce disease infestation.
Seed treatment with Catbendazim @ 2 gram/kg seed before nursery establishment.
Spray Copper Oxychloride @ 2.5 gram/liter or Propiconazole @ 1 ml/liter water during booting stage and milk stage.
During tillering and before 1 week of tillering spray Hexaconazole @ 1 ml/liter water or Chlorothalonil @ 2 gram/liter to prevent disease.

Khaira Disease of Rice

Apply only recommended dose of Nitrogen & phosphorus.
Manage good drainage system in the field.
Apply 15-20 kg/ha of Zinc Sulphate in the zinc deficit field.
Spray mixture of 5 kg of Zinc Sulphate and 2.5 kg of Lime in 1000 liters of water per hector after rice transplantation. Repeat at 10-12 days interval according to requirement for 2-3 times.