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Trunk injection or endotherapy also known as vegetative endotherapy, [1] [2] [3] is a method of target-precise application of pesticides, [4] [5] [6] plant resistance activators, [7] or fertilizers [8] into the xylem vascular tissue of a tree with the purpose of protecting the tree from pests, or to inject nutrients to correct for nutrient deficiencies.
Trunk injections are used for large trees that are near water or where soils are too rocky for soil injections or drenches. The chemical is injected directly into the tree and transported to the twigs and needles where the hemlock woolly adelgids are feeding. Adequate soil moisture is also necessary for the tree to take up these products.
Relationship between Tools in the Farm Forestry Toolbox. The 'Tools' were initially developed to make routine tasks easier. For example, using the 'Stocking Tool' it is possible to calculated the number of trees required, given a row and in-row spacing, and area to be planted. The 'Health Tool' has a similar approach.
These pesticides make the entire plant, or parts of the plant, poisonous to insects that feed on the plant tissue. Most systemics are very toxic to people and pets. Trunk injections are confined to the tree's cambium layer, where it is carried to the leaf tissue by the movement of the tree's sap.
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Sprays with mineral oil (horticultural oil) or the use of systemic pesticides by trunk injection or soil drenches can control the elongate hemlock scale. [8] In North America, natural enemies of F. externa are not very efficient in suppressing the scale populations compared to Japan and as a result, the scale populations in Japan are much smaller.
Medicare does cover rooster comb injections, also known as hyaluronic acid injections. Doctors administer rooster comb injections to treat knee osteoarthritis , the most common form of arthritis .
Wall Street kicked off the Santa Rally season on a positive note, with all major indices and sectors closing higher in a shortened session ahead of the Christmas holiday. The S&P 500 climbed 1% ...