Here is a general guide:
We have heard some folks use dish soap as a surfactant. We cannot recommend it, because there is not enough research behind it. We recommend a product like Non Ionic Surfactant to be mixed with most herbicides that that are labeled for it.
The surfactant that we carry by Southern AG is a non-ionic surfactant.
Yes, you could use the Southern Ag Non-Ionic Surfactant for Herbicides with Tenacity Herbicide for post-emergent applications. You would not need a surfactant when applying Tenacity for pre-emergent weed control only. You should use 1 teaspoons of surfactant per gallon of diluted herbicide, or 1-2 pints per 100 gallons of spray.
We do not recommend mixing a Non-Ionic Surfactant for Herbicides with an herbicide such as Speedzone in a hose end sprayer since you cannot guarantee that the spray will be uniform a mixture. If using a tank sprayer such as a hand pump or backback sprayer, then you would mix 2 teaspoons of Non-Ionic Surfactant for Herbicides with the labeled amount of Speedzone. We apologize, which we are not sure which Speedzone you are referring to for the mix ratio. Keep in mind that a surfactant is not required for use Speedzone and may reduce selectivity on your turfgrass.
Water can be applied to the area after six hours. If it rained almost a day after application, there is no need to reapply.
Yes, the job of a Non-Ionic Surfactant for Herbicides is to increase the penetration, coverage and overall effectiveness of almost any herbicide.
Non-Ionic Surfactant for Herbicides is what we recommend for use with an herbicide in a pond. This product will help the product that you are using more effective. The rate is 1-2 teaspoons per gallon of water.