Psyllids cause a variety of symptoms such as tiny lumps on leaves, distorted shoots and sooty mould. They are also the insect vector of the disease psyllid yellows.
How to get rid of psyllids follow these steps:
Avoid bringing infected plants into your garden. During winter remove all plants that could be host to infection. Inspect susceptible plants regularly for signs of infection or infestation with psyllids. Remove and dispose of any plants that show symptoms of infection.
Apply SUPER SPECTRUM or MALDISON INSECT CONTROL insecticide to non-crop plants. Maldison will not kill eggs so repeat treatments will be necessary to kill adults and nymphs and break the life cycles.
Use CARBARYL INSECT CONTROL or new ORGANIC INSECT CONTROL with Pyrethrum to crop plants, paying particular attention to the underside of leaves where adults and nymphs live. Follow product instructions for use on crops carefully.
There are no treatments for Psyllid Yellows (the bacterial disease spread by psyllids) available at this time. Control of psyllids is the best way to manage this disease.
Psyllids are small sap sucking insects usually about the size of aphids. Nymphs have a flat shell like covering.
Psyllids cause a variety of symptoms on plants such as tiny lumps or dimples on the leaves of the plant, distorted shoots, tip dieback and sooty mould. They can also cause wilting and irregular brown, yellow or orange patches on some ornamentals. Psyllids are the main vector spreading a bacterial disease that causes psyllid yellows in tomatoes, capsicums and tamarillos and zebra potatoes. The control of this disease is only possible through control of the psyllid insects.
The scientific name of the tomato/potato psyllid is - Bactericera cockerelli
The name of the bacterium that the psyllids spread and causes disease in tomatoes, potatoes, capsicums and tamarillos is Liberibacter solanacearum