Nymphs and adults suck sap from undersurface of the leaves
Honeydew excrete – development of sooty mould fungus
Nymphs are yellow, greenish-brown or dark pink, flat and oval. ‘H’shaped yellow mark (Half grown scales)
Adult female is hemispherical, body is covered by a brown hard shield.
Control ants as in the case of mealy bugs.
Remove and burn weeds which harbour the scale.
Spray the affected patches quinolphos 25 EC @ 120 ml using a gator sprayer in 200 l of water and add 200 ml of any agricultural wetting agent in 200 l of the spray solution.