Tap roots – Self-Sufficiency Organic Gardening – Expats Portugal Community Forum
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Tap roots  


Posts: 502
VIP Member
(@madeira)
Honorable Member
Joined: 9 years ago

Does anyone know what the proportion of tap root should generally be to tree size?

If I have a 1.6m macadamia/avocado/papaya/etc tree, how long should the tap root be approx?

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Posts: 1503
VIP Member
(@old-bloke)
Noble Member
Joined: 12 years ago

Is tap root depth not dictated by the ground the plant is growing on, in that if there is only 500mm of soil above solid rock the roots cannot penetrate the rock?
Don't know if this helps;
ftp://ftp.aphis.usda.gov/foia/FOLDER_10 ... 201996.pdf

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Posts: 502
VIP Member
(@madeira)
Honorable Member
Joined: 9 years ago

Yes, O.B., of course you are correct. That is why I would not want to plant a trees with a deep tap root in shallow soil - it would never thrive.

My more immediate concern is with ordering a 1.6 m tree and whether the tap root is likely to be pot bound for a tree of that size.

Very interesting article you referenced. thank you

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Posts: 208
VIP Member
(@nogard)
Estimable Member
Joined: 9 years ago

In the early years of tree growth the tap root will be as long or longer than the tree. So i would say; yes it will be pot bound! When one grows trees from seed, as i do,one is very careful to allow enough room; depth, for the tap root. It must not become 'bent' let along pot bound! If it is the tree will 'never' reach its' full potential.

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Posts: 502
VIP Member
(@madeira)
Honorable Member
Joined: 9 years ago

Thanks Nogard. Very helpful!

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