Whiteflies: Aleurolobus barodensis
- Yellowing of leaves and later it shows pale in colour
- Leaf turns pinkish or purple and later gradually dry.
- Infested leaves look white and black dots.
- In severe cases, it look like fiery appearance
- It shows very slow in the growth of the plant.
Identification of pest:
- Egg: Females lay eggs in a line near the midrib or anywhere on the lower surface of the leaves. Eggs are yellowish with a small curved stalk. Colour changes to black about two hours after the eggs are laid.
- Nymph & Pupa: Neonate nymphs are pale yellow in colour, flat and oval in shape, later turn shiny black. Its body is surrounded by fringes of wax.The fourth instar being the pupal stage, is flat, oval, greyish in colour and slightly bigger than the nymph. There is a ‘T’ shaped white marking on the thorax, which splits at the time of adult emergence.
- Adult: Pale yellow body with hyaline wings dusted with waxy bloom, exhibit brisk fluttering movements.
- Avoid water stagnation and provide proper drainage facilities
- Detrashing of cane at the 5th and 7 th month
- Avoid the excess application of fertilizers
- Detrashing the puparia bearing leaves and immediately disposing by burning or burying to prevent the emergence of adult whiteflies.
- Ensure adequate irrigation which facilitates the soil moisture and reduces the multiplication.
- Spray fenitrothion 50 EC @ 2 lit / ha (1000 lit spray fluid)
- Spray thiamethoxan 25 WG @ 125g/ha, 750 litres of spray fluid.
- Spraying acephate 2g per lit of water.the spray has to be repeated after a month to kill the nymphs emerging from eggs
- Application of chlorpyriphos @ 1250 lit spray fluid by using hand sprayer.
- TamilNadu Agritech Portal