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velcro ball and slingshot – hemlock wooly adelgid sampling technique

velcro ball and slingshot - hemlock wooly adelgid sampling technique

One sampling technique for hemlock woolly adelgid (Adelges tsugae) is to launch a Velcro-covered ball into a tree with a slingshot, retrieve it when it falls, and examine it for adelgids or their woolly covering. The technique was developed by Jeffrey Fidgen of the Canadian Forest Service. (Image originally published in Limbu et al 2018, Journal of Integrated Pest Management)

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