The Hi-Yield Killzall Aquatic Herbicide is safe around aquatic life when applied as directed on the product label. The product label states, "When emerged infestations require treatment of the total surface area of impounded water, treating the area in strips may avoid oxygen depletion due to decaying vegetation. Oxygen depletion may result in fish kill."
Hi-Yield Killzall Aquatic Herbicide per gallon of water plus a non-ionic surfactant. You can view the full product label anytime here.
The mix rate needed for Hi-Yield Killzall Aquatic Herbicide depend on the type of weeds you are trying to control. You can use anywhere from 1 oz per gallon up to 10 1/4 oz per gallon of water. According to the Product Label many applications are recommended at the 2oz per gallon rate, however if you are not able to get complete coverage then you can up the dose to 6 2/3 oz per gallon or for trees and shrubs you can use up to 10 1/4 oz per gallon of water.
Hi-Yield Killzall Aquatic Herbicide is safe for fish and wildlife when used as directed on the product label.
Hi-Yield Killzall Aquatic Herbicide is labeled for control of waterprimrose. Be sure to add a non-ionic surfactant such as this one.
Hi-Yield Killzall Aquatic Herbicide label, this product does not control plants which are completely submerged or have a majority of foliage under water.
Hi-Yield Killzall Aquatic Herbicide does not control weeds that are submerged or the majority of any foliage under water. We do offer other aquatic herbicides that can be applied for submersed weeds. AquaStar is labeled for treatment of mature water lily and others.
While Hi-Yield Killzall Aquatic Herbicide is labeled for use around aquatic areas, we cannot tell you for certain that it is safe to use in or around koi ponds. We recommend contacting a local Koi expert for recommendations or consulting with the County Cooperative Extension Office or recommendations.
Per the Hi-Yield Killzall Aquatic Herbicide Label, there is no restriction on the use of treated water for irrigation, recreation, or domestic purposes.
The 3/4% is the percentage level of the active ingredient when Hi-Yield Killzall Aquatic Herbicide is mixed with water. In reference to the Chart on page 9 of the product label, the lowest percentatge of active ingredient when mixed with water is 3/4% and goes up to 8% of the active ingredient. The percentage of active ingredient recommended is based off what weeds you are targeting (annual, broadleaf, grassy, woody brush, vines, etc).
A frog or salamander should not have any harm come to them from an herbicide application including Hi-Yield Killzall Aquatic Herbicide if they are not sprayed directly or in the area before application has dried completely.
The rates for Hi-Yield Killzall Aquatic Herbicide will depend on the weeds you are targeting. Please refer to the product label for the recommended application rates for your application.
For annual and perennial weeds, Hi-Yield Killzall Aquatic Herbicide is recommended to be applied at the 5% solution rate (6 2/3 fl oz per gallon of water) and a 5% to 8% solution rate (6 2/3 fl oz to 10 ¼ fl oz) for woody brush and trees.
Please view the full product label for more information.
Hi-Yield Killzall Aquatic Herbicide is not labeled to kill or control waterlily therefore cannot be recommended. Hi-Yield 2, 4-D Selective Weed Killer is labeled for water lily.
Please view the product label for more information.
Also, take a moment to read over this article by Texas A&M on How to Control Water Lily for additional information and treatment methods.
Hi-Yield Killzall Aquatic Herbicide is labeled for broadleaf weeds, many herbaceous or woody plants, annual and perennial grasses. Without knowing what specific weeds you are targeting, we cannot advise if this product would work for your treatment or offer an alternative product. Please review the listed weeds Hi-Yield Killzall Aquatic Herbicide will control starting on page 8 of the product label.
