Brown plant hopper (BPH): Nilaparvata lugens Stal. (Hemiptera : Delphacidae )

Local name: Kandu jigi hulu

Vernacular name: Bili Dhomi, Solle

Damage symptoms:

•  Leaves turn to yellow and later brownish.
•  "Hopper burn".
• Presence of honeydew and sooty molds at the basal parts.
• More severe during panicle initiation stage.

                                        

       Hopper burn symptoms            Grassy stunt virus disease by BPH           Adult and nymph damaged plant

     ETL: 5-10 adult BPH tillering to ear emergence in the field

Management:

Cultural practices:

• Avoid use of excess nitrogen.
• Monitoring of BPH at base of the plant 30 days after transplanting at weekly interval.
• Resistant varieties IET-7575 and IET-8116.
• Alternate wetting and drying the field during peak infestation.
• Apply recommended dose of nitrogen fertilizer.

Biological control:

• Wolf Spider Pardosa psuedoannulata and Lynx spider Oxyopes javanus prey on  leaf-and plant hoppers.
• Mirid bug, Cyrtorhinus lividipennis  Reuter prey on eggs and small nymphs of GLH,BPH and WBPH.

Chemical control:

• Spray monocrtophos 35 EC @ 2ml/l (624ml/acre) at nursery stage.
• Application of granular phorate 10G@ 4kg/acre or carbofuran 3G@ 10kg/acre insecticides in presence of thin film of water.                                                                   or
• Spray imidacloprid 200 SL @ 0.5ml (125ml/acre) or thiomethaxm 25WG @ 0.5g (125kg/acre) or phaslone 35 EC @ 2ml/l (800ml/acre) water or quinolphos 5G @ 12kg/acre.