Call your local Cooperative Extension Service for detailed chemical information pertaining to chemical treatments.You can use this type of application to kill large numbers of trees. Banding (also called lacing or streaking) applies concentrated solution to the soil in a line or band spaced every 2 to 4 feet. Soil Treatments: Certain soil treatments applied evenly to the soil surface can move into the root zone of targeted plants after ample rainfall or overhead moisture.Treatments are least effective during very hot weather and when trees are under severe water stress. Make applications from early summer to late September, depending on the choice of herbicide. Foliage Treatments: Foliar spraying is a common method of applying herbicides to brush up to 15 feet tall.This method is effective on trees of all sizes. The low-volatile ester formulations are the only oil-soluble products registered for this use. Use herbicide spray mixed with oil until the bark is saturated. Some species can be treated during winter. Basal Bark Treatments: Apply herbicide to the lower 12 to 18 inches of the tree trunk (on the bark) from early spring to mid-fall.For trees 3 inches or less in diameter, treat the entire cut surface. On larger trees, treat only the outer 2 to 3 inches, including the cambium layer, of the stump (the internal heartwood of the tree is already dead). Stump Treatments: After cutting a tree down, you can minimize the possibility of regrowth by immediately treating the freshly cut surface with herbicide to prevent sprouting.Injection is often handled by a tree removal company because it requires an investment in equipment. For best results, treat trees 1.5 inches or more in diameter at chest height. Treatments are effective when injections are made every 2 to 6 inches around the tree. Injection Treatments: Use specialized tree injection equipment to administer a specific amount of herbicide into the tree when the cut is made.
Avoid spring applications when sap flowing from the wound will prevent good absorption. Immediately apply the selected herbicide into the cuts.
BEST ROOT KILLER FOR TREES SERIES
Start by making a series of downward cuts around the circumference of the tree with an ax or hatchet, leaving the frill (cut section of bark) connected to the tree.
Cut Surface Treatments: This technique involves creating a pathway through the bark so that herbicide can be introduced into the plant's vascular tissue.
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