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Roads, sidewalks and foundations can all suffer structural issues from tree roots. [7] Several methods of control have been attempted, from barriers to encouraging growth in desirable directs. Selection of plants with root systems that will not conflict with nearby structures is the most effective method of damage control.
Grubbing is performed following clearance of trees to their stumps, preceding construction. [1] In animal behaviour grubbing is a feeding technique, referring to digging and uprooting of roots and rhizomes of plants. It is employed by geese, especially greater and lesser snow geese and Canada geese, [2] as well as swine. [3]
The roots of privet can reproduce asexually through root suckers. [5] This vegetative reproduction makes privet difficult and costly to control because root fragments left in the soil can sprout and grow new plants. [5] One reason why privet is so invasive in the United States is because it has few native shrub competitors. [11]
Root barriers are also used to separate plant roots from each other. In particular, walnut trees secrete the chemical juglone which is toxic to other plants but the use of root barriers can prevent the yield reduction that would normally occur when walnut trees are alley cropped with maize as often occurs in the American Midwest. [3] [4]
Trees under power lines, or that up-heave sidewalks when soils become moist, or whose roots seek out and clog drainage tiles can cause expensive damage. Trees generally contribute to bioretention sites the most when they are located close enough to tap moisture in the rain garden depression, yet do not excessively shade the garden and allow for ...
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