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Introduction to aquatic weed management in Australia Andrew Petroeschevsky NSW Department of Primary Industries National Aquatic Weeds Management Group.

Published byClaude Houston Modified over 9 years ago

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Presentation on theme: "Introduction to aquatic weed management in Australia Andrew Petroeschevsky NSW Department of Primary Industries National Aquatic Weeds Management Group."— Presentation transcript:

1 Introduction to aquatic weed management in Australia Andrew Petroeschevsky NSW Department of Primary Industries National Aquatic Weeds Management Group

2 Legislation and responsibilities State legislation Differing levels of control categories Eradicate Control/contain/suppress Ban from sale (environmental weeds) Responsibility for control – Vic DPI or Landholders 30+ aquatic plant species declared in Australia (approx 10 in Vic)

3 What are Australia’s worst aquatic weeds? Weeds of National Significance Alligator weed, cabomba, salvinia National Alert List Horsetails, lagarosiphon, senegal tea OtherWater hyacinth, water lettuce, dense waterweed.

4 Alligator Weed Status 100+ infestations around Melbourne Outbreak near Albury, NSW of high concern

5 Alligator weed

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7 Cabomba Status Recently removed from sale in Victoria 2 Known sites (Lake Nagambie & Broken River) Previous infestation in Gippsland destroyed No registered herbicides available

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10 Salvinia Status 15,000 hectares Most infestations under biocontrol Major outbreak in Yellow Water – Kakadu Occasionally found in nurseries & water gardens

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