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

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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 <strong>western</strong> 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.
Table 11. Possible treatments for insect problems on trees and shrubs (prepared by DP Judy King) I Insect group I Damage I Insects responsible I Chemical control I Non-chemical Bud and terminal shoot feeders Flower feeders Leaf eaters Leaf chewers Leaf miners Leaf skeltonisers Sap suckers Distortion and multi-leading of stem; usually do not kill tree Feed on flower parts and seeds May cause severe defoliation; eat leaves Feed and tunnel between leaf surfaces; cause blistering, splitting and cracking leaves Eat tissue between leaf veins Withered new shoots, distorted leaves and small branches; brown control Larvae of small moths; Usually not needed; a Remove insect larval and adult spray with Rogor gives and destroy weevils, control and protection damaged tissue Larvae of moths and butterflies, larval and adult beetles Larvae of defoliating sawfly, cup moth, case moths and other moths and butterflies; adult Christmas beetles; adult and larval leaf beetles; grasshoppers, crickets, stick insects Larvae of some moths, leaf blister sawfly, flies forests Carbaryl, maldison, Rogor sprays; stem injection of older trees with Rogor--only in extreme cases Systemic insecticides: Rogor by spray while crown can be reached; stem injection as last resort-repeated injection causes severe tissue damage Mechanical removal of stick insects, grasshoppers; larvae of processionary caterpillars can be trapped under damp sacks; Dipel (suspension of a bacterial pathogen for some caterpillars Remove and burn affected leaves Young larvae of leaf As for leaf chewers As for leaf chewers; larvae of chewers and gum skeletoniser miners I I puncture marks on 1 I I large bugs leaves from injected salivary moth; larvae of some sawflies Mobile: leaf hoppers, Carbaryl, Rogor spray Large bugs can aphids, mealy bugs, or stem injection be knocked into cicadas, large bugs a can of soapy water; many secrete toxins and should not 1 toxins; excretion of Sedentary (often Carbaryl and white oil be handled I "honeydew" which I covered with scale): spray, Rogor spray or I On small trees, I I attracts ants and I nymphal psyllids I stem injection I hose.or scrape provides substrate for sooty mould growth; leaf curling with associated (lerps), scale insects Leaf curlers: thrips Rogor spray or stem injection off with small brush, or douse with soapy (pure soap) water; destroy affected I tissue I 1 small, dark spots I I 1 remove and
Page 1 and 2:
Information Series QI96050 Gardenin
Page 3:
Acknowledgments This booklet is mad
Page 6 and 7:
Chapter 1. Gardening with bore wate
Page 8 and 9:
At the neutral pH level, that is 7,
Page 10 and 11:
Sulphur can also be a very useful w
Page 12 and 13:
Table 1. Recommended pH range a. Fl
Page 14 and 15: Table 2. Australian native plants s
Page 16 and 17: B. Exotic trees, shrubs and creeper
Page 18 and 19: Table 5. Species lists for heavylcl
Page 20 and 21: Chapter 2. Growing better lawns Kee
Page 22 and 23: Some of the fertilisers will absorb
Page 24 and 25: fertilised regularly to promote vig
Page 26 and 27: Suitable species This is a big subj
Page 28 and 29: A lot of people water pot plants by
Page 30 and 31: Preparing the hole Dig a hole about
Page 32 and 33: Ferti Iiser A small application of
Page 34 and 35: Plant into deep soil moisture Good
Page 36 and 37: The tree's growing space extends ar
Page 38 and 39: Mulching: For mulching to be effect
Page 40 and 41: Particulars for mulch application S
Page 42 and 43: Fertilising native trees Most nativ
Page 44 and 45: Table 7. Types of fertiliser Note:
Page 46 and 47: Figure 18. Simple home-made guards
Page 48 and 49: Chapter 5. Propagation of trees and
Page 50 and 51: Gently water in the seed and keep i
Page 52 and 53: Fertilising: It is necessary to sup
Page 54 and 55: Follow safety warnings Most materia
Page 56 and 57: mite wax scale White wax scale (Gra
Page 58 and 59: Vegetables Insect pests of curctrrb
Page 60 and 61: Caterpillars or grubs on vegetables
Page 62 and 63: Roses and other flowers Dieback in
Page 66 and 67: I!OS JaAO 6!p pU@ s~)!uJ~) leya~eur
Page 68 and 69: Chapter 8: ich pesticide to use (Ad
Page 70 and 71: Table 12. The easy guide to chemica
Page 72 and 73: Nicotine spray This spray has been
Page 74 and 75: &e%tuce This deters most insects. I
Page 76 and 77: Index Aphids 54 Ants 18 Australian
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