western-queensland-gardening-guide.pdf - South West NRM

an eye dropper or an oil can, inject methylated sprits, or maldison at the recommended
concentration into the hole. By the time most holes are seen the adults have emerged
and flown away. Seal pruned twigs and injured areas with bitumastic paint, heavy
greases, grafting mastic or creosote.
mite scale insects
These are similar to the white scale found on citrus trees and may be controlled using
the same .white oil spray.
Powdery mildm
This fungus occurs on many s
shrubs other than the crepe myrtle (Lagerstroemia). It occurs as grey, floury patches on
leaves and twigs, and the leaves are often grossly distorted.
Control
Dust with sulphur when first noticed and as necessary after that.
Grasshoppers and lonrsts
Several species occur in western Queensland from
destructive to most horticultural crops if they are pres
last few years they have caused severe defoliation of
gardens. The main species are the Australian plague locust and the spur-throated
locust.
Control
Control is difficult unless it is carried out before the grasshoppers reach the flying
n flying, grasshoppers invade the garden in large numbers. Some control
can be obtained by using an insecticide spray such as maldison (Malathion),
fenitrothion (Folithion 1000 Insecticide Spray), or diazinon (Diazinon 800).
ites (white ants)
These usually eat only dead wood and bark but sometimes infest trees near buildings
and so pose a threat of invasion.
Con fro1
Remove all buried timber near the building since this acts as an energy source to fuel
invasion. Seek out and attack the nest directly with chlorpyrifos (e.g. Deter, Dursban).
The amount to apply varies with the size of the colony and it is often a difficult matter
to judge the right amount. Areas around the nest, especially where trails are seen,
should also be treated.