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.
Then Non-Ionic Surfactant for Herbicides is not safe for use in aquatic environments, per the product label. You could use this product with Rodeo Herbicide only if it is used away from aquatic areas.
Non-Ionic Surfactant for Herbicides is a non-ionic surfactant and does not contain methylated seed oil (MSO). The MSO actually helps to strip away the waxy coating on the target weeds, while a regular non-ionic surfactant will not do this. So while a regular non-ionic surfactant is better than no surfactant, it will not provide as good of results as using an MSO surfactant such as Duo Stick when using a quinclorac herbicide such as Drive XLR8.
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.
Water can be applied to the area after six hours. If it rained almost a day after application, there is no need to reapply.
The surfactant that we carry by Southern AG is a non-ionic surfactant.
The numbers on a surfactant such as the Non-Ionic Surfactant for Herbicides are indicative of how much active ingredient is in the surfactant, so a higher number, such as 90 instead of 80, generally means a higher quality product. Most products that require a non-ionic surfactant require the use of at least an 80/20 product for best results, but always check the product label of what you are using to ensure you are using the correct surfactant.
Yes, the job of a Non-Ionic Surfactant for Herbicides is to increase the penetration, coverage and overall effectiveness of almost any herbicide.
Methylated seed oil can still be mixed with Tencity instead of the Non-Ionic Surfactant for Herbicides. It will also promote the product to stick to the plants. Be sure to apply during cooler times of day.
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.