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Aquatic Plant & Weed Removal/Control Methods

The first challenge in the effective control of aquatic weed is in identifying what weed it is that is causing the problems. There are three basic groups of aquatic weeds.

Step 1

WEED IDENTIFICATION:

Submerged Aquatic Plants and Weeds - These aquatic plants and weeds are mostly rooted in the bottom sediment and grow completely underwater, with some varieties only the flowers extend above the water's surface.

Floating Aquatic Plants or Weeds - There are two types of floating aquatic plants or weeds.

  • Free floating with no roots imbedded in the bottom sediment. These plants or weeds float on the water's surface, where they derive nutrients directly from the water or via a root system that is free floating.
  • Free floating with roots imbedded in the bottom sediment. These plants or weeds have leaves that float on the water's surface and their roots are firmly anchored to the bottom sediment of the waterway.

Emergent Aquatic Plants or Weeds - These aquatic plants and weeds grow in shallow areas of lakes, ponds, rivers and in dams. These plants are not reliant on being submerged in water and often grow on the edges of waterway and extend into the pond, lake or dam.

http://www.aquatic.net.au/images/image%2020.jpgStep 2

ENVIRONMENTAL FACTORS:

The second challenge is identifying the environmental factors that are contributing to the promotion of aquatic plant or weed unwanted growth levels.

Addressing the source of pollution problems including rubbish, organic waste and water quality (all of which could be adding nutrients to the water and promoting weed and algae growth) can significantly reduce growth levels.

Step 3

METHODS OF CONTROL:

Thirdly there is the determination of the correct method of control for the aquatic problem. Any one or a combination of several methods can be used to control unwanted aquatic plants or weeds.

There are three main methods of controlling aquatic plants and weeds:

Mechanical removal to control - This method is preferred by Aquatic Site Maintenance as the approach to solving most aquatic plant and weed problems. The mechanical removal to control involves the use of specialised cutting, collecting and removal equipment including the use of custom designed boats. Mechanical controls can deliver instant results without significantly impacting on the aquatic environment by targeting the problem areas leaving desirable aquatic plants and water life untouched.

Chemical Control - Is where herbicides are used to kill or inhibit growth rates of aquatic plants or weeds. Herbicides can be sprayed directly onto aquatic plants and weeds or can be added directly to the water. Chemical control can often work extremely fast in removing the problem aquatic plants or weeds.

Biological Control - Could include the introduction of fish, aquatic snails and other aquatic life that feed on problem aquatic plants or weed, or conversely the introduction of other desirable aquatic plants that directly compete with the problem aquatic plants for oxygen, sunlight or nutrients. This method is a desirable long term solution where it is able to be used.

http://www.aquatic.net.au/images/Image%201%20Aquatic%20Logo.jpgStep 4

THE DEVELOPMENT OF A MANAGEMENT PLAN:

The development of an efficient aquatic maintenance program for the effective management of your aquatic problems.

GETTING THE RIGHT ADVICE:

Aquatic Site Maintenance is Australia's leading provider in the mechanical removal of nuisance aquatic plants and provides advice, contracting services, consulting services and the manufacture and sales of aquatic plant removal equipment and boats.

Aquatic Site Maintenance believes in environmental issues and uses best practice to control problem aquatic plants and weeds.

 


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