Associated Links:
The White Amur | Cost of White Amur | Who is the LCA | How to Help

Hydrilla is back and Property Owners need to know the extent of the problem so we all can work on a solution.


This recent photo on the left shows Hydrilla on the surface of Lake Conroe. The photo on the right shows what is becoming common around the lake as this is one of the 18 plant varieties planted by Texas Parks and Wildlife (P&W) and considered as "beneficial plants".
Click picture for close up view

 
Hydrilla
  Bushy Pond Weed


The Problem
Hydrilla, Giant Salvinia and some "beneficial species" grow extremely fast!!!

  • In 1977, with minimal Hydrilla in Lake Conroe, unsuccessfully treated with an aquathol based herbicide.
  • In 1979 6,000 acres of Hydrilla, unsuccessfully treated with an aquathol based herbicide.
  • In 1980 7,500 acres of Hydrilla, unsuccessfully treated with an aquathol based herbicide.
Hydrilla grew from next to nothing in 1977 to over 9,000 acres by 1980 and covered virtually 100% of the shorelines. Herbicides were unsuccessfull and the effect of the White Amur was relatively unknown at the time. The introduction of the White Amur in 1981 eliminated the Hydrilla. Unfortunately, once the perferred food of the White Amur was eliminated they ate all the beneficial vegetation in the Lake.

Virtually all of the White Amur that were introduced in 1981 died (no offspring). Hydrilla, Giant Salvinia, Bushy Pond Weed, considered beneficial, are back in Lake Conroe.

At first glance it would seem there is an easy solution. The White Amur eliminated the hydrilla before, so let's put some White Amurs in the lake again.

But things are not that simple today. We all want to eradicate detrimental vegetation. However, as responsible individuals, we need to maintain a healthy ecosystem in the Lake. Herbicides have been unsuccessful in controlling Hydrilla and a biological control is underway, the weed eating White Amur. A biological control is being evaluated to control Giant Salvinia. However, Giant Salvinia can be controlled by herbicides, and the LCA has urged TP&WL to have a "2-pronged" approch, evaluate the effectiveness of the weevil and control Giant Salvinia with herbicides until the effectiveness of the weevil is known.

We have a plan for Hydrilla: White Amur. A known method to eradicate Giant Salvinia is known: Herbicides. Once the White Amur eat all of the Hydrilla, they may control Bushy Pond Weed.





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WHAT WILL THE WHITE AMUR COST?



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