Hello, everyone.
This is Enta.
How should tree stumps be handled during slope stabilization work where there are many stumps?
The other day, we talked about it until we decided to cut it off.
What do we do next?
That's the point.

Basically, you just apply it from the top!
People often say, “Aren’t the tree roots going to push through the formwork or mortar eventually?”
Won't the mortar crack all over the place?
That's what people say.
Photosynthesis is essential for rhizomes to grow larger. (Elementary school science)
We learned that a long time ago, didn't we?
Since it photosynthesizes, it absorbs water and continues to grow.
If it’s just tree roots, that means it can’t photosynthesize, right?
In plants, the green parts perform photosynthesis, but generally speaking, the stems and roots do not.
For that reason, if you cut the rootstock and completely cover it with mortar, it will almost certainly stop growing!

But here's the thing.
Here's the key point!
I really want you to cover everything with mortar!
There's a reason for this, and,
If the roots remain, eventually the white parts of the roots will turn green, and
It's going to try to photosynthesize!
It’s easier to understand if you think of this in terms of weeds—for example, when you’re weeding, you often pull them out by the roots, or
They say weed killers kill the plants right down to the roots, don't they?
It just means that if there are roots, it'll grow back!!
(This is discussed in a paper on plants; see the reference below.)
(If there are no leaves, do the roots perform photosynthesis?(The University of Tokyo, Graduate School of Arts and Sciences, Faculty of Liberal Arts)
So make sure to...It is necessary to prevent ultraviolet rays from entering.
That's the point.
In the long run, it’s best to seal the area around the tree as tightly as possible (by filling it with mortar).

Open-Type and Sealed-Type Frame Structures
That would also make maintenance easier. (No need to weed.)
Sometimes people tell me things like, “You’re going to let the roots die again,” but,
This means that when the roots die, a void is created there.
When a gap forms, things start to loosen up, don't they?
From a legal standpoint,
Cut the stump flush with the ground,
Just seal it off neatly with mortar on top!
As a side note, it’s better not to install drain pipes in that area either, so that UV rays don’t get in,
I think that might be a good idea.
See you later



