I guess that answers my question, maybe, are you talking 33% dilution of a gallon of 61% that would actually result in a 20 1/3% triclopyr solution with diesel?
G
Good question. Triclopyr 3 is 44.4% active ingredient, but Triclopyr 4 is 61.6% active ingredient, which is the most common, and is what you have. The recommended 1/3 - 2/3 mix that you are referring to is Triclopyr 4 at 61.6% active ingredient, this is what commercial guys often use.
So, to simplify this hack& squirt mix ratio for everybody; take 1 cup of Triclopyr and mix to 2 cups of diesel fuel. 1 gallon of Triclopyr 4 makes 3 gallons of mixed herbicide. Kerosene or home heating fuel is fine as well, about the same thing as diesel.
Note; this is a very strong mixture for hack and squirt or stump treatment. For spraying green leaves of woody plants mix 1 cup Triclopyr to a gallon of water. These two formula's are close to the maximum allowed rates per label.
Here is the Triclopyr label that pertains to the above;
Low Volume Basal Bark Treatment - To control susceptible woody plants with stems less than 6 inches in basal diameter, mix 20 to 30 gallons of Alligare Triclopyr 4 in enough oil to make 100 gallons of spray solution. Apply with a back pack or knapsack sprayer using low pressure and a solid cone or flat fan nozzle. Spray the basal parts of brush and tree trunks in a manner which thoroughly wets the lower stems, including the root collar area, but not to the point of runoff. Herbicide concentration should vary with size and susceptibility of species treated. Apply at any time, including the winter months, except when snow or water prevents spraying to the ground line or when stem surfaces are saturated with water.
Low Volume Foliar Applications For control of woody plants, mix up to 20 quarts of Alligare Triclopyr 4 in 10 to 100 gallons of spray solution. Adjust the spray concentration of Alligare Triclopyr 4 and total spray volume per acre to match the size and density of target woody plants and kinds of spray equipment used. With low volume sprays, use sufficient spray volume to obtain uniform coverage of target plants including the surfaces of all foliage, stems, and root collars. For best results, a surfactant should be added to all spray mixtures. See the SPRAY ADDITIVES section for a rate recommendation.