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Herbicide Summary - Velossa®

Used to control most annual, biennial, and perennial weeds and woody vegetation for conifer site preparation and release and in the establishment of yellow poplar plantations.

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Updated:

January 26, 2023

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Herbicide application; Photo by vvoennyy via DepositPhotos

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Common Name: Hexazinone-25%

Formulation: Water-soluble liquid

Signal Word: Danger

Toxicity: Slightly toxic; oral LD(50): 1,200 mg/kg for male rats

Use Classification: General use

Minimum Required Personal Protective Equipment: Long-sleeved shirt, long pants, shoes, socks, and protective eyewear

Carriers: Water

Activity: Absorbed through foliage and root uptake

Mode of Action: Has both pre- and postemergence activity; sufficient soil moisture is required for activation

Selectivity: Most conifer species and yellow poplar show some tolerance

Precautions: Causes irreversible eye damage; not recommended for use on highly permeable soils or on areas with shallow water tables; if applied within root zone, desirable trees and shrubs may be affected

Application Methods: Foliar spray (aerial or ground), soil grid or basal (single stem) with handgun applicator, injection

Manufacturer: Helena

Agenda

Authors

David R. Jackson

Former Extension Educator, Renewable Natural Resources

Pennsylvania State University