Brown plant hopper (Nilaparvata lugens ,Delphacidae,Homoptera )

• Most destructive pest
• Excess pop causes hopper burn usually observed in patches of the opening phase of the crops.
• IItalso trtransmitsrassy stunt virus disease
• Favorable environmental condition is
• BPH can also transmit Rice Ragged Stunt and Rice Grassy Stunt Neither disease can be cured.

Damaging stage:- adult and nymph

Damaging symptoms:

• hopper burn or yellowing, browning ,and drying of plant
• ovipositional marks exposing the plant to fungal and bacterial infections
• presence of honeydew and sooty molds in the bases of areas infected
• plants with ragged stunt or grassy stunt virus.

Identification

• Egg:- female laying egg inside the sheath by lacerating the plant tissue.
• Nymph:- Brownish black iaving grayish blue eyes.
• Adult :-brown color

Life cycle

Egg—> 5-8 days—> nymph—> 10-15 days—-> adult

Management

• Laval parasitoid like pseudognatopus
• Predato : green-mired bug, carabid beetl , lady beetle
• Light trap, rice and soybean (intercrop) ,transplanting older see .
• Chloropyrifus 20% Ec @2ml/l
• Buprofenin 25%Ec @ 1g/l, it’s contact inhibitor