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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.
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.
The 44 Percent: Miami-Dade’s tree-planting program, the Heat’s historic win, botched lethal injections, and film festivals Camellia Burris April 25, 2024 at 12:30 PM
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In southern Germany apple and pear trees have been a part of the landscape for a long time, and are difficult to protect. The decline of apple and pear trees from their landscape can be expensive to replace and could have a negative effect on tourism. In the long-run, fire blight is a very important factor of economy and society. [citation needed]
A California fire prevention guide recommends to "Remove all tree branches at least 6 feet [1.8 meters] from the ground" and "Allow extra vertical space between shrubs and trees." [3] In British English, limbing can be synonymous with snedding. Alternatively, limbing can be used to describe the operation on larger branches, and snedding on smaller.
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related to: trunk injections for trees cost calculator app log