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Pests

Pests
2
Aug

Plant hoppers

 

File Courtesy: 
Punjab Agricultural University, Ludhiana
Photo Courtesy: 
Mr. Y. Kondal Rao (DRR)
2
Aug

Rice Skipper

1. Caterpillars of skipper (Pelopidas mathias) are yellowish greenwith four white dorsal stripes.
2. It has a large head and tapering body The caterpillars defoliate the plant.
3. The adult is a fast moving skipper.

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
http://www.indianaturewatch.net/displayimage.php?id=147697
2
Aug

Rice Horned caterpillar

1. Homed caterpillar (Melanitis leda ismene) IS a minor pest of rice.
2. Female adult is dark brown butterfly, which lays white eggs on rice leaves.
3. Caterpillars are green in colour. It feed’s on the leaves at night and remains stationary during daytim.
4. Pupation takes place on leaf. The insect generally infests the crop during vegetative phase mainly on lowland rice.

File Courtesy: 
ICAR NEH, Umiam
2
Aug

Rice stemborer

 

1. The larvae of these insects bore into the stem and cause damage from July to October.

2. The affected young plants show dead-hearts (yellowing and drying of central shoot) whereas the old ones produce empty earheads which turn white and stand erect.

File Courtesy: 
Punjab Agricultural University, Ludhiana
Photo Courtesy: 
CRRI
2
Aug

Root aphids

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Gundhi bug

1. Gundhibug (Leptocorisa oratorious) is the most serious pests of rice under upland and lowland conditions.
2. Both nymphs and adults suck the sap from the developing grains, which results chaffy grains.
3. Nymphs are more destructive than adults. These bugs cause Yield losses up to 20-40%.

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice green semilooper

1. Rice green semilooper (Naranga aenescens) is one of the major pests of rice.
2. It infests 30-40 days old upland crop and continues to Damage the crop up to 65 days. The larvae feed mainly on leaves and defoliate them.
3. Apanteles sp. parasitize up to 80% of green semilooper in field conditions.

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
IRRI
2
Aug

Rice ear cutting caterpillar

1. The outbreak of rice ear cutting caterpillar (Mythimna separata) was recorded during 1982 initially in Assam and then spread to Manipur, Arunachal, Meghalaya and Tripura.
2. It is an important pest of rice in the region. During outbreaks, it causes 100% damage to the standing crop•
3. The larvae cut the ear head and leave behind the rice shoot resulting in as if the animals have grazed it. It directly affects the yield of the crop.

File Courtesy: 
ICAR NEH, Umiam
2
Aug

Rice Hispa

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice Gall midge

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice Thrips

1. Both nymphs and adults of thrips (Thrips oryzae) feed on the plant sap from tender leaves.
2. The leaf tips of the affected plants fade and roll up and the thrips remain within the folds.
3. This is a serious pest in uplands of Sikkim andjhum lands ofTripura, Mizoram, Meghalaya, Manipur and Arunachal Pradesh.

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice Armyworm

1. Army worm (Spodoptera mauritia) is a sporadic pest on rice and severely occurs in Umraiang valley of Jowai district in Meghalaya, valley land of Manipur and Tripura.
2. Caterpillars feed on leaves and in severe infestation entire seedbeds and fields are destroyed and the fields appear as if it has been grazed by animals/cattle.
3. The larvae feed voraciously in the night and hide in the cracks and crevices of the soil during daytime.

File Courtesy: 
ICAR NEH, Umiam
2
Aug

Rice Caseworm

1. Case worm (Nymphula depunctalis) is one of the serious pests in many areas of the NE region.
2. Adults of case worm are 6 mm long with wingspan of 15 mm. Slender green coloured caterpillars cut leaf blades into length of about 1.25 cm out of which they make tubular cases with which they feed and float while moving plant to plant. During heavy damage, leaves are skeletonised and appear whitish in colour.

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice Leaf roller

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Rice Stem borer

File Courtesy: 
ICAR NEH, Umiam
Photo Courtesy: 
CRRI
2
Aug

Important Pests of Meghalaya and Manipur

The economically important insects causing considerable damage to rice crop in this region are
1. Stem borer
2. Leafroller
3. Caseworm
4. Armyworm
5. Thrips
6. GalI midge
7. Rice hispa
8. Rice ear cutting caterpillar
9. Rice green semilooper
10. Gundhibug
11. Root aphids
12. Horned caterpillar
13. Skipper
14. Slug caterpillar

File Courtesy: 
ICAR NEH, Umiam
2
Aug

Insect Pests of Punjab State

Important insect pests of punjab state are

1. Rice stemborer .

2. Leaf Folder.

3. Plant hoppers.

4. Grasshoppers.

5. Rice Hispa.

6. Rice root weevil.

7. Rice-ear-cutting-caterpillar

File Courtesy: 
Punjab Agricultural University, Ludhiana
2
Aug

Insect Pests of Punjab State

Important insect pests of punjab state are

1. Rice stemborer
2. Leaf Folder
3. Plant hoppers
4. Grasshoppers
5. Rice Hispa
6. Rice root weevil
7. Rice-ear-cutting-caterpillar

File Courtesy: 
Punjab Agricultural University, Ludhiana
1
Aug

Flea beetles

Adults scrap and feed on the chlorophyll of new leaves. Young seedlings are more affected and start drying from tips. Typical damage can be seen as white blotches on leaves.

Management of Flea beetles

Spray monocrotophos 0.05% at the time of incidence.

File Courtesy: 
Rice Research Station, Kaul (Kaithal), Haryana
Photo Courtesy: 
Rice Research Station, Kaul (Kaithal), Haryana
1
Aug

Management of Gundhi bug

Dusting the crop with Carbaryl (Sevin 5%) or Malathion 5% dust or chlorpyriphos 2% dust @ 20 kg/ha in the morning hours with duster or spraying the crop with 0.05 % monocrotophos or 0.07% endosulfan or 0.05% quinalphos (Ekalux) to reduce the population.
(B) Lowland: Lowland rice is infested in nursery as well as after transplanting.
1.Nursery: Many insects infests rice in nursery, viz., root aphid, flea beetles, stem fly, stem borers, WBPH, green leaf hoppers, grass hoppers, filed crickets & hairy caterpillars and cause severe damage.

File Courtesy: 
Rice Research Station, Kaul (Kaithal), Haryana
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