White fly ( Bemisia tabaci, Aleyrodiade , Homoptera)

• Polyphagus
• Acts as a vector of different
• Suck sap from ventral surface of
• Transmitted yellow vein mosaic virus in okra, Tomato yellow Leaf curl virus , Mosaic virus in chilli, Leaf curl of cotton.

Damaging stage: Nymph and Adult

Damaging symptoms: yellowing of leaf with red plants parts, less flowering and fruiting.

Identification

• Egg: laying egg on stomata, pear
• Larva : scale like only mobile larval stage which moves into the lower surface of leaves and feed.
• Pupa ; 4^th nymphal instar is typically referred to as a Pupa is flat, irregular oval shaped.
• Adults : white to slightly yellowish color , pair wings,both wings are covered with powdery and waxy secretion.

Management:

• Avoid excessive darkness and dampness.
• Avoid transplanting of white fly infected seedling.
• Intercropped with non-preferred crop such as wheat, barley with main
• Yellow sticky
• Extract neem fruit ( overnight soaked 50 gm fruit dust in 1 liter water).
• Tobacco decoction ( 200 gm dried tobacco+ 30 gm soap +4 liter water boiling 30 min and diluted 1:4 ratio).
• Aq .extract of china berry fruit ( 24 hr soaked 1kg of chinaberry fruit dust in 10 liter).
• Neem based fungicide such as a antineem @3-5 ml/liter of
• Rogar 30%Ec ( dimethoate )@ 1ml/liter.

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