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01
Aug

Leaf scald

Symptoms: 1. The disease is caused by Rhynchosporium oryzae; 2. Leaves get blighted with dark and light brown zonations. 3. The symptoms may start from tip or margin of the leaf. Management of disease 1. One or two sprays of 0.1% carbendazim 50 WP at Panicle Initiation reduce the disease severity
01
Aug

Brown Spot disease

Symptoms: The disease is caused by Helminthosporium oryzae. It produces oval dark brown spots on leaves and plumes. The disease occurs mostly in deficient and P90r soils and when severe, causes heavy damage both in nursery and in the field. Management of brown spot: Correction of soil deficiency and application of balanced nutrition reduces the disease
01
Aug

Management of blast disease

A) Chemical control 1. Seeds should be soaked for 12 hrs in 0.1 % Carbendazim 50 WP (Bavistin, Derosol or JKstein) prior to sowing of nursery or broadcasting for upland rice. 2. Root dip treatment to the seedlings immediately after uprooting is recommended for 12 hrs in 0.1 % Carbendazim 50 WP (Bavistin, Derosol or JKstein) in low land crop. 3. Bavistin (0.1 %) followed by Hinosan (0.1 %) or Dithane M -45 (0.25%) should be sprayed at fortnightly interval beginning from first appearance of th
01
Aug

Symptoms of blast disease

1. Typical leaf lesions are spindle shaped, usually with reddish yellow margin; grey in the centre. 2. Leaves of susceptible varieties may be killed. The fungus may also attack the stems at nodes which turn dark brown to blackish in colour and tend to break easily. 3. Lesions may also occur on panicle neck. The infected necks turn blackish and break over. Neck blast results in few or no se
01
Aug

Blast disease

1. Causal organism -Magnaportha grisea is endemic in north eastern states. 2. This disease affects the crop at all the growth stages viz., nursery, tillering and flowering. 3. The yield loss ranges from 36 -50% depending upon the variety and environmental conditions
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