FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Most tree roots spread 2-3 times the radius of the canopy, and often reach out 5 times the radius of the tree canopy or more in dry conditions. So, for example, if a tree is 6m wide, the radius of the canopy is 3m. The root spread = 2 (to 3) x canopy radius = 2 (to 3) x 3m = 6m (to 9m).
Detailed explanation-2: -Shepherd’s tree (Boscia albitrunca), native to the Kalahari Desert, has the deepest documented roots: more than 70 meters, or 230 feet, deep.
Detailed explanation-3: -It is uncommon for trees to have roots deeper than about 2m, though exceptionally some small (a few mm in diameter) roots can extend to 5m or more. Most roots are found close to the soil surface, with 90% or more of all roots located in the upper 60cm.