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06
Aug

Rice hispa

 

Local name :

Symptoms for damage of Rice Hispa:

1. Damage is caused by both grubs and adults. Grubs feed by tunneling lower and upper epidermis, resulting in regular translucent white patches.

2. Adults scrap the surface of leaf blade often leaving only the lower epidermis.

3. Damaged plant parts appear as white str

06
Aug

Brown spot

Causal organism: Helminthosporium oryzae

Symptoms:

1. Many dark brown elliptical spots on leaves; infects coleoptiles of seedling and causes blightining; infected kernel shriveled.

Management

1. Seed treatment before sowing with carbandazim (2.5g/kg).

2. Treatment with fungicide like mancozeb 0.25% or Adinophos 0.1%.<

06
Aug

Leaf Roller

 

Local name :

Nature and symptoms for damage of leaf folder:

1. Larvae infest the young leaves.

2. They feed on leaf tissue and as they become older, fold the leaf to form a tube.

3. During severe infestation, leaf margins dry completely.

Control of Leaf Folder

1. Spray ca

06
Aug

Sheath rot

Causal organism- Magnoporthe Salvinii

Symptom:

1. Disease infect rice after tillering.

2. The initial infection occurs on the stem in the leaf sheath and towards maturity penetrating in to the culm often causing lodging.

3. Below sheath small dark brown spots formed which have no shape. Because of this diseases panicle do not emerges

4. If the pani

06
Aug

BPH and WBPH

 

Local name: Bhura mahu

Nature of Damage of BPH and WBPH :

1. Nymphs and adults damage the plants by sucking the sap and by plugging xylem and phloem with their feeding.

2. Sheath and pieces of tissues are pushed into these vessels during exploratory feeding and affects early stage of plant growt

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