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Pests

Pests
29
Jul

Mealybug ( Mavuppoochi )

1. Common name- Mealybug .

2. Scientific name - Brevennia rehi.

 3. Vernacular name - Mavuppoochi ( மாவுப்பூச்சி )

 Identification of Mealybug:

Adult - Small reddish white, soft-bodied wingless insect covered with filamentous materials.

Damage of Mealybug :

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
Mr. Y. Kondal Rao (DRR)
29
Jul

White backed plant hopper ( Ven muthugu thathu poochi )

1. Common name - White backed plant hopper.

 2. Scientific name - Sogatella furcifera.

 3. Vernacular name - Ven muthugu thathu poochi ( வெண் முதுகு தத்துப்பூச்சி ).

Damage of White backed plant hopper.

• Suck the sap and cause stunted growth.

• “Hopper burn” is caused in irregular patches.

Identification of White backed plant hopper.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Brown plant leafhopper ( pogayan)

 

1. Common name- Brown plant leafhopper.

 2. Scientific name - Nilaparvata lugens.

 3. Vernacular name - pogayan ( புகையான்)  .

Symptoms of damage of Brown plant leafhopper:

• Nymphs and adults congregate at the base of the plant above the water level.

• Affected plant dries up and gives a scorched appearance called “hopper burn”.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Whorl maggot ( Kuruthu EE)

 

1. Common name- Whorl maggot.

2. Scientific name - Hydrellia sasakii.

3. Vernacular name - Kuruthu EE ( குருத்து ஈ ) .

Symptom of damage of Whorl maggot:

• Maggot feeds on the tender tissue inside the whorl.

• Yellowish white longitudinal marginal blotching with hole.

• Leaves shrivelled plant stunted and maturity delayed.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Spiny beetle / Rice hispa (Mule vandu)

 

1. Common name - Spiny beetle / Rice hispa.

2. Scientific name - Dicladispa armigera.

 3. Vernacular name - Mule vandu ( முள் வண்டு ).

Symptoms of damage of Spiny beetle:

• Adults feed on chlorophyll by scraping and causing white parallel streaks.

• White patches along with long axis of leaf.

• Grubs mine into the leaves and make blister near leaf tips.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Yellow hairy caterpillar ( Manchal kambalipuzhu)

1. Common name - Yellow hairy caterpillar .

2. Scientific name - Psalis pennatula .

3. Vernacular name - Manchal kambalipuzhu ( மஞ்சள கம்பளிப்புழு ).

Symptoms of damage of Yellow hairy caterpillar:

• Caterpillar causes defoliation.

Identification of Yellow hairy caterpillar:

• Caterpillar is yellowish brown with red stripes.

 • Orange head and tufts of hairs all over the body.

• Pupa - pale white cocoon of silk and frass attached to the leaf.

File Courtesy: 
TNRRI, Aduthurai
29
Jul

Rice horned caterpillar ( Pachhai kombupuzhu )

 

1. Common name - Rice horned caterpillar .

2. Scientific name - Melanitis ismene.

3. Vernacular name - Pachhai kombupuzhu ( பச்சை கொம்புப்புழு ).

Damage of Rice horned caterpillar :

• Larva feeds on leaf blades of rice.

• Leaves are defoliated from the margin or tip irregularly.

Identification of Rice horned caterpillar:

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
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.

• Larvae scrapes the green tissues of the leaves and becomes white and dry.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
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 green with constructed neck.

Adult: Butterfly with brown coloured wings and curved antenna

File Courtesy: 
TNRRI, Aduthurai
29
Jul

Gall midge ( Nel Kurutthu E)

 

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
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  .

• Severe infestation - cattle grazing appearance to the field.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
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).

File Courtesy: 
TNRRI, Aduthurai
29
Jul

Paddy Stemborer ( Thandu thulaippan)

 

1. Common name - Paddy stemborer .

2. Scientific name - Scirpophaga incertulas.

3. Vernacular name - Thandu thulaippan (தண்டுத்துளைப்பான்).

 Symptom of damage of Paddy stemborer:

• Presence of brown coloured egg mass near leaf tip.

• Caterpillar bore into central shoot of paddy seedling and tiller.

• Causes drying of the central shoot known as “dead heart” .

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Rice case worm ( Nel kootu puzhu )

 

1. Common name - Rice case worm.

2. Scientific name - Nymphula depunctalis.

  3. Vernacular name - Nel kootu puzhu.

  Symptom of damage of Rice case worm:

• Caterpillars feed on green tissues of the leaves and leave become whitish papery.

 • Tubular cases around the tillers by cutting the apical portion of leaves.

 • Floating of tubular cases on the water .

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Green leafhopper ( Pachai thathu poochi)

 

1. Common name - Green leafhopper .

2. Scientific name - Nephotettix virescens .

3. Vernacular name - Pachai thathu poochi ( பச்சை தத்துப்பூச்சி ).

Symptom of damage of Green leafhopper:

1.Yellowing of leaves from tip to downwards.

2. Vector for the diseases viz., Rice tungro virus, rice yellow & transitory yellowing.

File Courtesy: 
TNRRI, Aduthurai
Photo Courtesy: 
TNRRI,Aduthurai
29
Jul

Snails and Slugs

 

Snails and slugs are Invertebrata and belong to Phylum: Mollusca, Class: Gasteropoda.

Snails differ from slugs in having a spirally coiled shell over their body which in slugs is reduced and completely hidden under the mantle.

1. Common garden snails: Helix, Macrochlamys indica.

2. Green house snail: Opeas gracilis.

3. Giant African snail: Achantina fulica.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
http://www.yates.com.au/problem-solver/problems/snails-and-slugs/
29
Jul

Rice Gundhi bug / Earhead bug.

 Scientific name: Leptocorisa acuta, Alydidae, Hemiptera.
Symptom of attack: Leaves turn yellow and later rusted from tip downwards.
Appearance of numerous brownish spots at the feeding sites / shrivelling of grains.
In the case of heavy infestation, the whole earhead may become devoid of mature grains. Its presence in the field is made out by its strong smell.

Nature of damage: Both adults and nymphs do the damage. The nymphs start feeding 3 to 4 hours after hatching. They feed on the leaf sap near the tip/ on milky sap in developing spikelets at milky stage.

Sucking of the milky sap causes ill-filled/ partial filled and chaffy grains. Serious infestation can reduce the yield by 50%.

The straw gives off-flavour that is unattractive to cattle.

Management: Chemical control: Spraying of Endosulphon 35 EC or Quinolphos 1.5% Dust @ 25 kg/ha, or Quinolphos 25 EC @ 1.5 liter in 500 liter water / ha is found to be highly effective in controlling the insect populations.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
CRRI
29
Jul

Rice Swarming Caterpillar

 

Scientific name: Spodoptera mauritia, Noctuidae, Lepidoptera.

Symptom of attack: Nurseries found completely eaten away by the caterpillars’ overnight.

Nature of damage: Caterpillars march in large numbers in the evening hours and feed on the leaves of paddy seedlings till the morning and hide during daytime.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
29
Jul

Management of Gall midge (Sanrhakeet)

1. Ploughing under the ratoon of previous crops can reduce infestation.

2. Control of grassy weeds and wild rice (alternate hosts) from surrounding areas can reduce Gall midge incidence.

3. Avoiding staggered planting (complete planting in an area within 3 weeks) to reduce infestation.

4. Chemical control: Carbofuran 3G @ 30 kg/ha is found to be highly effective in controlling the insect populations.

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
29
Jul

Rice Gall midge (Sanrhakeet)

 

File Courtesy: 
C S Azad University of Agriculture and Technology, Kanpur
Photo Courtesy: 
Mr. Y. Kondal Rao (DRR)
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