Major Pests

Crop and Pest

Stage of the Crop

Symptoms of Damage

Control Measures

 

PADDY

1. Stem Borer

(Scripophaga incertulas)

 

Tillering to panicle

initiation stage

 

Larva damages the central shoot at the bottom which

dries up, it is referred to as dead heart. If the attack is at

the panicle stage white ear head with chaffy grains are

formed.

 

Endosulfan,35 EC 2ml./litre,

Quinolphos 25 EC 2 ml./litre

Trichograma sp. (Release

50,000/ha),Clipping seedling tips.Acephate 75%

SP2ml/litre,Neem (0.03 Ec) 5 ml perlitre

 

2. Brown plant hopper

(Nilaparvata lugens)

 

Tillering to ripening

stage

 

Both adults and nymphs congregate on the stem and

leaves just above the water and devitalize the plant by

sucking the plant sap. In severe infestation, seedlings

show burning symptoms in concentric patches, which

leads to hopper burn. While spraying direct the nozzle

towards the base of the plant.

Integrated Pest Management

Avoid excess use of “N” fertilizer.Transplant at recommendedspacing.

Set up light traps Avoid spraying insecticides

which causes resurgence likemethyl parathion etc.If the incidence is more, drain-out water from field for 5 to 6 days, Monocrotophos 36 SL 1.3 ml/lt. (while praying direct the nozzle to the base of the plant)

 

3. Gall midge.

(Orseolea oryzae)

 

Seedling, tillering and

boot leaf stage

 

 

The maggots burrow into the shoots at the bottom

resulting in long hallow characteristic galls or silver

shoots preventing the formation   of ear heads.

Carbofuran 3% granule at 15kg. per hectare or use

of resistant varieties.

 

4. Paddy Hispa

(Dicladispaarmigera)

 

Early stage of the

crop

 

Adult beetle scrape the green matter of the leaf causing

characteristic white parallel streak. The grubs mine into

the leaves and produce   blotches.

 

Quinalphos 25 EC,2 ml./lt. or Phosalone 35 EC,2ml./lt.