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Instructions for mixing glyphosate 41

Updated February 21, 2017

Gardeners, farmers and landscapers trust weedkillers to protect their crops and flowers. Glyphosate is common worldwide in both professional weed control and for home use. Glyphosate 41 is a strong chemical herbicide that contains a 41 per cent dilution of the herbicide. This chemical is typically mixed with water for easier distribution and spraying. However, you must mix the weedkiller carefully to avoid negative effects on the plants you want to keep.

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  1. Fill your sprayer or mixer with the desired amount of water. If you are using a spray tank, fill the tank halfway with water and begin agitating with the mechanisation tools. The amount of water and glyphosate you use will depend on the size of the area you intend to spray, as well as the size of your mixing container or sprayer.

  2. Mix in 78 ml (2 2/3 fl oz) of glyphosate for every 4.5 litres (1 gallon) of water in the mixture. When you add the herbicide, you may notice the solution foam slightly. This is a normal response.

  3. Agitate the mixture lightly, unless the spray tank is automatically agitating it for you. Shake or stir the solution to provide proper agitation. Agitation will ensure that the glyphosate and water are thoroughly mixed, providing you with an even and effective herbicidal solution.

  4. Tip

    Depending on the strength of the solution you want to apply to your weeds, you can add up to 384 ml (13 fl oz) of glyphosate to each 4.5 litres (1 gallon) of water. This will create a 10 per cent dilution, which is the strongest recommended for use on soil in which you intend to grow healthy plants.

    If you add oil or other mixing ingredients to your mixing tank solution, add them before you add the glyphosate.


    Keep Glyphosate 41 and the resulting mixture away from desirable plants and trees. Avoid human consumption and contact with sensitive areas such as the mouth, nose and eyes. This is a strong, toxic chemical.

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Things You'll Need

  • Sprayer or mixer
  • Water
  • Glyphosate

About the Author

Samantha Volz has been involved in journalistic and informative writing for over eight years. She holds a bachelor's degree in English literature from Lycoming College, Williamsport, Pennsylvania, with a minor in European history. In college she was editor-in-chief of the student newspaper and completed a professional internship with the "Williamsport Sun-Gazette," serving as a full-time reporter. She resides in Horsham, Pennsylvania.

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