Homemade Aquatic Weed Killer

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Aquatic plants are vital for many bodies of water, especially because they serve as an important food source for birds and fish. Some aquatic plants and weeds can become pests, however, as they can interfere with swimming, boating and fishing. Fortunately, a homemade control made from a bale of barley has been shown to control algae and other aquatic weeds. With the correct construction and application of this homemade weed killer, you can effectively control aquatic non-native plants and weeds.

Things You'll Need

  • 5 bales barley
  • Fish netting
  • 3-pronged tiller
  • Blue talapia
  • Redbelly talapia
  • Common carp
  • Break apart a bale of barley with a pitchfork or three-pronged tiller. You will need approximately 225 pounds of barley per acre of water, which is about five bales per acre.

  • Place the barley straw into fish netting. Don't smash the barley together tightly. The straw should just go into the net, and the net should loosely bind it together so that air can circulate through the straw. The barley requires air for decomposition, and if the straw is packed too closely together, it won't decompose quickly enough and in a way that will deter algae and other aquatic weeds.

  • Close the net with a tie or knot and place it into shallow water. The water should not be placed in water that is greater than 5 feet deep.

  • Introduce blue tilapia, redbelly tilapia or the common carp into the body of water. Using fish as a biological control is an effective and economic alternative to using store-bought chemicals and herbicides. And while barley straw has been known to prevent aquatic weeds and algae, it will not usually kill the weeds that are already present, which is why introducing these types of fish can kill the weed population already present in the body of water.

Tips & Warnings

  • Do not use any homemade remedy into public waters. The EPA does not govern your private body of water (such as a private lake or private pond), which is why you can use the baled barley method or even introduce fish into the body of the water. This is not the case for public waters, however.

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References

  • Photo Credit Jupiterimages/Photos.com/Getty Images
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