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Help me with this math - determining age of live oak tree

Posted on 12/30/21 at 12:40 pm
Posted by TDsngumbo
Alpha Silverfox
Member since Oct 2011
41800 posts
Posted on 12/30/21 at 12:40 pm


The diameter of my tree 4.5’ above the ground is 52.86”. Me and my dad are going back and forth. I’m saying my tree is 334 years and he’s saying it’s 180 years old.

Who sucks at math? Spoiler alert: it’s probably me
Posted by member12
Bob's Country Bunker
Member since May 2008
32127 posts
Posted on 12/30/21 at 12:42 pm to
Calling bullshite on the 10 inch in diameter = 76 years.

We have one that’s about 40 years old that’s bigger than that.
Posted by Deep Purple Haze
LA
Member since Jun 2007
52526 posts
Posted on 12/30/21 at 12:42 pm to
just cut it down and count the rings
Posted by TDsngumbo
Alpha Silverfox
Member since Oct 2011
41800 posts
Posted on 12/30/21 at 12:43 pm to
quote:

Calling bullshite on the 10 inch in diameter = 76 years. We have one that’s about 40 years old that’s bigger than that.

Remember diameter is different from circumference.
Posted by habz007
New Orleans
Member since Nov 2007
3737 posts
Posted on 12/30/21 at 12:44 pm to
quote:

Calling bullshite on the 10 inch in diameter = 76 years.
We have one that’s about 40 years old that’s bigger than that.


Same here
Posted by member12
Bob's Country Bunker
Member since May 2008
32127 posts
Posted on 12/30/21 at 12:45 pm to
quote:

Remember diameter is different from circumference.


I know what diameter is and I’m calling bullshite.

These trees grow slowly, but not THAT slowly.
Posted by Naked Bootleg
Member since Jul 2021
1855 posts
Posted on 12/30/21 at 12:46 pm to
Posted by TheHarahanian
Actually not Harahan as of 6/2023
Member since May 2017
19594 posts
Posted on 12/30/21 at 12:46 pm to

Cut down the tree and count rings.

52.86” is very accurate for something that isn’t perfectly circular and has a rough surface.
This post was edited on 12/30/21 at 12:47 pm
Posted by SeeeeK
some where
Member since Sep 2012
28114 posts
Posted on 12/30/21 at 12:47 pm to
Just make shite up, like biologist, scientists, etc and others do.
Posted by goofball
Member since Mar 2015
16904 posts
Posted on 12/30/21 at 12:47 pm to
A trunk 10 inches in diameter is a lot younger than 76 years. So you are probably both wrong.
This post was edited on 12/30/21 at 12:48 pm
Posted by MEANGREEN65
Funkytown, TX
Member since Oct 2014
777 posts
Posted on 12/30/21 at 12:48 pm to
About tree fiddy
Posted by GRTiger
On a roof eating alligator pie
Member since Dec 2008
63354 posts
Posted on 12/30/21 at 12:48 pm to
154+((x-22)*6)

X is the diameter of your tree.
Posted by SLafourche07
Member since Feb 2008
9932 posts
Posted on 12/30/21 at 12:49 pm to
Based on your formula you're right baw.
Posted by Kimist
Member since Nov 2011
459 posts
Posted on 12/30/21 at 12:50 pm to
Your analysis is correct but you have the wrong answer, so you both suck at math. :-)

Sorry, I was apparently analyzing the example, not your tree.
This post was edited on 12/30/21 at 12:53 pm
Posted by habz007
New Orleans
Member since Nov 2007
3737 posts
Posted on 12/30/21 at 12:50 pm to
quote:

52.86”


That’s high level precision. Y'all measuring with lasers?
Posted by BtonTiger318
The OT Lounge
Member since Jul 2021
461 posts
Posted on 12/30/21 at 12:51 pm to
quote:

I know what diameter is and I’m calling bullshite.

These trees grow slowly, but not THAT slowly.



Agree, My dad planted this tree in the front yard of my grandparents house and its probably 55 years old and I would guesstimate about a 40" base.

This post was edited on 12/30/21 at 12:52 pm
Posted by Power-Dome
Member since Nov 2012
1119 posts
Posted on 12/30/21 at 12:51 pm to
quote:

52.86” is very accurate for something that isn’t perfectly circular and has a rough surface.


Measure circumference and divide by pi.

I got 339 years based on aging structure in op. Didn’t double check
Posted by Shaun176
Baton Rouge
Member since Aug 2008
2483 posts
Posted on 12/30/21 at 12:53 pm to
quote:

Calling bullshite on the 10 inch in diameter = 76 years.

We have one that’s about 40 years old that’s bigger than that.


10inches for 76years is not right.

Baton Rouge High has some live oaks that are at least 60 inches in diameter and they were planted 90 years ago.
This post was edited on 12/30/21 at 12:56 pm
Posted by NATidefan
Two hours North of Birmingham
Member since Dec 2008
36194 posts
Posted on 12/30/21 at 12:54 pm to
You can't go by diameter or circumference. Got to count the rings.

In wet climates or years the tree will grow more (more space between the rings) and in dry climates or drought years it will grow less, etc.

This post was edited on 12/30/21 at 12:56 pm
Posted by AU_251
Your dads room
Member since Feb 2013
11559 posts
Posted on 12/30/21 at 12:54 pm to
No way a 10 inch caliper tree is 76 years old. Where is that source from? I would say a 10” caliper is somewhere around 30-40 years
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