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Herbicide to control invasive plants in Grand Canyon


Added 04-16-19 01:03:01am EST - “The National Park Service says it will apply cut-stump and occasional spot spray treatments of herbicide along Colorado River's banks in the Grand Canyon to control several invasive plant species.” - Washingtontimes.com

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Posted By TheNewsCommenter: From Washingtontimes.com: “Herbicide to control invasive plants in Grand Canyon”. Below is an excerpt from the article.

GRAND CANYON, Ariz. (AP) - The National Park Service says it will apply cut-stump and occasional spot spray treatments of herbicide along Colorado River’s banks in the Grand Canyon to control several invasive plant species.

The non-native plants targeted are Russian knapweed, camelthorn, pampas grass and perennial pepperweed.

An environmental assessment prepared a decade ago for the park’s exotic plant management said chemical pest control would be better than no action and deemed it would have no significant negative impact on park ecology.

The park service said the imazapyr-based herbicide is approved for aquatic use but will not be applied directly to water. The cut-stump method will be used when possible, applying the herbicide to a cut in the invasive plant’s main stem.

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