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29
Jul

Leaf folder (or) leaf roller (Elai suruttupuzhu)

 

1. Common name- Leaf folder (or) leaf roller .

2. Scientific name - Cnaphalocrocis mainsails / Marasmia patnalis.

 3. Vernacular name - Elai suruttupuzhu ( இலை சுருட்டுப்புழு ).

Symptom of damage of Leaf folder :

• Leaves fold longitudinally and larvae remains inside.

29
Jul

Rice skipper ( Nel skipper )

1. Common name - Rice skipper .

2. Scientific name - Pelopidas mathias.

3. Vernacular name - Nel skipper ( நெல் ஸ்கிப்பர் ).

Symptom of damage of Rice skipper ( Nel skipper ):

• Edges of the leaves are fastened with webbing.

• Backward rolling of leaves.

• caterpillar feeds from margin to inwards.

Identification of Rice skipper ( Nel skipper ):

Larva: Pale g

29
Jul

Gall midge ( Nel Kurutthu E)

 

1. Common name- Gall midge 2. Scientific name - Orseolia oryzae 3. Vernacular name - Nel Kurutthu E ( நெல் குருத்து ஈ) Symptom of damage of Gall midge: • Maggot feeds at the base of the growing shoot • Causing formation of a tube like gall that is similar to “onion leaf” or “Silver-shoot”. • Infested tillers
29
Jul

Swarming caterpillar ( Nel Padaipuzhu )

 

1. Common name- Swarming caterpillar.

 2. Scientific name - Spodoptera mauritia .

3. Vernacular name - Nel Padaipuzhu ( நெல் படைப்புழு).

Symptom of damage of Swarming caterpillar

• Larvae cut the seedlings in large scale  .

&bul

29
Jul

Management of Paddy stemborer ( Thandu thulaippan)

• Resistant varieties: Ratna, Jaya, TKM 6.

• Avoid close planting and continuous water stagnation.

 • Pull out and destroy the affected tillers.

 • Set up light traps to attract and kill the moths.

 • Harvest the crop upto the ground level and disturb the stubbles .

• Release the egg parasitoid, Trichogramma japonicum on twice @ 5 cc/ha/ (followed by monocrotophos 36 SL spray thrice @ 1000 ml/ha on 58, 65 and 72 DAT).

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