What Are the Dangers of Grayzon Herbicide?

Grazon herbicide is a broad spectrum weed control that is designed to last the entire season. Grazon is used for the improvement of grass production though the reduction in weeds. The herbicide effectively controls the growth of a wide variety of perennial and annual broadleaved weeds such as broomweed, dock, croton, horsenettle, ironweed, thistles and pigweeds. The active ingredient in Grazon is picloram. When using Grazon it is critical to follow the manufacturer’s safety recommendation both for your own safety and that of the other plants and animals in the area.

Danger to People

Grazon is a highly corrosive herbicide and can cause irreversible damage to eyes. It is also harmful if inhaled or swallowed. Avoid getting the herbicide on clothing or in eyes and avoid inhaling the mist of the herbicide when applying.

Affect Non-Targeted Plants

Grazon is a restricted use herbicide and is liable to cause damage to the non-targeted plants if the herbicide drifts from the areas of application. The herbicide is recommended to be used only by Certified Applicators or by individuals under their direct supervision. Do not use on windy days when there is a greater likelihood of the drift coming in contact with animals, people and other plants.

Danger to Water

Grazon should not be applied directly to any water source, to any area where surface water is present or to any intertidal areas below the high water mark. Clean equipment very carefully so as not to contaminate the water that is used for irrigation or domestic purposes. The active ingredient in the herbicide can easily leach through the soil into the groundwater. The herbicide is highly toxic for aquatic animals and according to manufacturer warning, this can result in long term adverse effects within the aquatic environment.

Hazards to Animals

When using Grazon on open fields it is important to keep lactating animals from grazing the treated areas for a week after the application. No hay should be harvested for 30 days after the use of the herbicides. The animals used for meat should not graze treated areas for at least 3 to 4 days prior to slaughter. According to manufacturer the urine of animals is likely to contain enough picloram from the herbicide to damage sensitive broadleaved plants. It is not recommended to mulch or compost plants with the hay or grass from treated areas or with the manure of animals that have grazed on treated grounds.

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