VEGETATION MANAGEMENT PLAN for Bidjigal Reserve - Land

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Vegetation Management Plan - Bidjigal Reserve7.8.3 Seed CollectionCollection SitesIn many urban bushland reserves, especially those which have been degraded for some years, therewill be few native plants remaining in the mid-storey or understorey to provide seed or otherpropagules. Trees and/or large shrubs are more likely to remain in situ, and as this seed is relativelyeasy to collect, these components of the plant community tend to be over-represented in thecollector’s seed bank, and subsequently in the tubestock supplied for revegetation programs. It istherefore important to allow adequate lead-time for seed collection and propagation of tubestock inorder to ensure a wide diversity of both plant forms and species is obtained.For indigenous planting programs, seed collection from bushland within a 10-kilometre radius of therestoration site is recommended 16 . Seed should be collected from a number of individuals andbulked in order to avoid creating a ‘genetic bottleneck’.Where local seed sources are inadequate, seeds may be collected from further afield, provided thatthey are sourced from similar plant communities, growing on similar soils and parent geology, andwithin the same climatic range.Seed Collection GuidelinesSeed collection, processing and storage should follow the Flora Bank Seed Collection Guidelines(National Heritage Trust/Bushcare/Greening Australia 2002), which can be found atwww.florabank.org.au.7.8.4 Densities and Spatial ArrangementPlanting densities will depend very much on the number and type of native plants remaining in situand/or regenerating on the subject site after weeds are removed. If the site is effectively denudedafter weed removal, and it is unlikely that natural regeneration will provide the desirable result,tubestock can be planted to replicate the pre-disturbance community structure.Planting density should be based on the final size of the relevant species used. For example, smallsizedplants (generally less than 500 millimetres in height) should be planted in groups at a density ofapproximately three (3) to five (5) units per square metre.Larger species should also be planted in groups of three (3) to seven (7), but should be placedsufficiently close together to enable a dense cover to form (as appropriate), but not so densely as tosuppress light-demanding groundcovers.16 Note: seed collection in council-managed reserves may only be undertaken with written permission, while collection inparks or reserves managed by the NPWS/DECC may only be carried out under a Section 91 Licence (forms available on linefrom the DECC website).UBM Ecological Consultants Pty Ltd 142
Vegetation Management Plan - Bidjigal Reserve7.8.5 Planting AidsPlant FertilisersA specially formulated native plant fertiliser (low in phosphorus) should be used when plantingnative tubestock on cleared or disturbed land. Regular applications of dilute fertiliser should beused twice yearly (spring and early autumn), or when plants show signs of yellowing or spindlygrowth (at least until the plants become established and drought hardy).The use of a plant fertiliser will promote plant establishment in the first 6-12 months of the plantingprogram. As the vegetation cover is re-established and organic matter is re-cycled into the topsoil,there will be less need for supplementary nutrient input.Complete native plant fertilisers are available in granular form or as tree tablets. Soluble fertilisersare preferable to granular forms, although tree tablets (or pellets) are useful at planting time.Water Retaining GranulesSoil wetters (e.g. Debco, Saturaid or Terracottem) should always be used in harsh conditions and/orwhere post-planting watering may be a problem, and they are particularly useful in free-drainingsandy soils. These products are inert, and do not react with fertilisers or herbicides. If used atplanting time, watering times can be reduced by up to 50%. Experience using such granules in bushregeneration sites has allowed a greater survival rate than previously achieved.Mulching and Weed MattingMulch is crucial to the success of most planting projects as it keeps the soil cool and moist andsuppresses weed growth. Mulching around planted tubestock can utilise chipped eucalypt mulch (ifthis is available), or if costs allow, commercial 'leaf mulch' may be used.Chipped or mulch from woody weed sources are never acceptable. All imported mulch must be ofknown provenance and free of weeds. Alternately, it is possible to foliar spray dense weed grasseswith a selective herbicide (e.g. Fusilade) and to leave the dead thatch in place as mulch.Mulch must be applied at the time of planting, after thorough soil wetting. When planting in largeopen areas, plants should be grouped to allow mulch to be applied around each 'planting island' orcluster. This reduces the edge effect (weed invasion, drying) and makes plant maintenance easier.Weed Matting (e.g. Jutemaster, Enviromat) is also useful for retaining soil moisture and suppressingweed growth. Individual weed mats may be used around each plant at planting time, or broad-scaleweed matting can be placed over a large area. If the latter approach is used, the matting must befirmly anchored with long metal pins.Note that weeds will grow well in most types of mulch and on the surface of weed matting, butseeds beneath are prevented from germinating.Note also that some grasses and bulb species have sharp leading shoots (new growth) that canpierce loosely spun weed mats and grow through the matting.UBM Ecological Consultants Pty Ltd 143
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specific regulations to improve the
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Parks & Landscape ServicesBushland
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1. IntroductionThese guidelines hav
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2.1 Step 1. Determine the Vegetatio
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2.3 Step 3. Calculate the Weed Clas
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2.5 Step 5. Report the Weed Classif
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Appendix B. Mapping ExampleKMC Bush
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VEGETATION MANAGEMENT PLAN for Bidjigal Reserve - Land

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