Green Leaf  Hopper : Nephotettix nigropictus Stal. and Nephotettix virescens Distant (Hemiptera : Cicadellidae )

Local name: Hasiru Jigi Hulu

Damage symptoms:

• Stunted growth and reduced tillering.
• On tillers appearance of white patches at higher population level.
• Transmits virus diseases: tungro, yellow dwarf, yellow-orange leaf, and transitory yellowing.

                          

Rice yellow dwarf disease                             GLH damage 

Management:

Cultural practices

• Avoid use of excess nitrogen.
• Monitoring of GLH at base of the plant 30 days after transplanting at weekly interval
• Alternate wetting and drying the field during peak infestation.
• Apply recommended dose of nitrogenous fertilizers

Biological control:

• Mirid bug, Cyrtorhinus lividipennis  Reuter prey on  eggs and small nymphs of GLH

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