Laurent Voulzy

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since Oct 01, 2016
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Recent posts by Laurent Voulzy

Zach Weiss wrote:Thanks for sharing Cassie, I'm also open to answering any questions folks have about the project, if that's of interest.


And wayne, thanks for the kind words as well.


The black stuff in the video is the clay? Did you stumble on it or do a prior deep sampling?
2 months ago
That's interesting.
Full tree is best.
Non tempered is more rugged.
Work will be done in two phases: improving soil will be done next year. Large scale. I think we'll mix that crazy soil with tons of compost.
2 months ago
The soil is clay, shallow hardpan, not the best. Huggel Kulture and swale was recommended, lots of top soil. All that is being planned.
I forgot a detail: winters average 32F but go down to -12F (-24C) with strong wind.
What do we need to do to increase survival chance of these fruit trees?
Are semi dwarf ok to live in such condition or full size is more resilient to cold?

Here is the weather historic of the area:
https://weather.com/weather/monthly/l/USNY0426:1:US
3 months ago
Ducks like to poop.
Ducks love pond.
I like pond to be clean.
I don't like to clean every month.

Is there a solution to this equation that doesn't require some complex power hungry contraption?
3 months ago
Thank you!
Why are mature trees so sensitive to transplantation? I think the owner wants large trees because their leaves produce more organics, long term mending strategy. But maybe planting a mix of semi drwarves for immediate fruit production, alongside some variety of trees that produces a lot of leaves might be a good alternate solution?

Can you check if I get these right?
1- clay soil is naturally fertile but the compact structure and water impermeability prevents the roots from breathing.
2- mending clay soil requires a short term and long term strategy
   2a- short term is done by mixing organics with the soil
   2b- long term is done with cover crops (clover?)
3- preventing water logging is important and done by planting trees in burms above surface
4- A swale a trench where the burm part is mixed with organics, and that burm is where planting occurs.
5- A swale allows water to move, a huggel culture does not.
6- water moving is ok with roots, water stagnating causes root rot.

Equipment they have:
a default bobcat skid steer

A hand held 16" gas powered Auger, no backhoe.

The Auger is an absolute nightmare to use in this soil and nearly useless in my experience as digging with shovel ends up being faster even to install posts. The last time I worked on that land, I mixed water thinking that it would soften the soil, instead it turned it into glue.

Logistic:
The default bobcat might be good enough to dig trench for swale building, but mixing organics in so much burm (100 trees worth) will need a clever solution. The first thing that comes to mind is doing a hybrid huggel/swale by digging a trench 2x the width, place logs in one half and push the earth over that half. Any better idea?

I wonder if having them invest in one of these helps.

3 months ago
I will be planting fruit trees next year in a soil that is very hard with rocks, clay and where it is hard to grow anything.
The person who owns this parcel of land wants mature large trees, the kind you get for $350 at the nursery.

I'm afraid that such mature trees won't adapt well to the soil.

What do you folks recommend?
3 months ago

Ben Zumeta wrote:That is weird about the lack of mycelium and fungus. You live in one of the most fungally rich and diverse regions on earth in Western WA. How close to the Sound are you? Any woody debris you bring in for mulch (barring an insane use of fungicides on the material) will harbor inoculating fungus, especially alder and douglas fir, which are the early succession species in coastal WA. Doug fir hosts the widest variety of fungus of any North American tree and has many endemic symbionts. Alder based fungus is necessary for many of the other native climax trees to grow. Bring in biomass of diverse sources and life will know what to do with it.


What a course in tree biology! I had no idea that Alder were so important not only because of the soil they produce upon their rather short life.
I looked at the soil again later in the year when the soil was moist and colder and it was populated with very densely packed white fiber.
I think during the hot season the soil dries out and maybe that mycelium goes deeper or the surface one dies out.

Would planting Alder in a very poor soil help enrich it?
3 months ago
A few 100K record/second should be enough no? How fast are spikes from a relay closing and filling up a motor startup capacitor? My hunch that it's where we're having problem, both capacitor on both pumps burnt again!
Also where do I start in term of programming this? Are there sources that are no crazy badly programmed (like most open source are the link you gave look like a shop and I don't see anywhere a thing that stores electrical measurement at high frequency like that, seem more like consumption monitors...
10 months ago
Thank you for the link, I contacted Brultech.

We are trying to debug the pump house so I'd guess that the time accuracy of the curve matters more than the current accuracy. I don't know if a system exists that can measure such rapid chain of events: one circuit closes another circuit causing another switch to close the pump circuit. 1 second sampling rate is too low but I'm thinking in terms of discrete events and what might be happening is something else altogether.
10 months ago
I tried Arduino years ago and loved that it was programmed in pure C. I don't need a server as I'm a few hundred feet from the community pump and server would require installation of an internet line.
The graph is what I'm looking for, what's the max frequency of capture? How do you input this many points and what's the cost for the measuring tools? I was thinking of using induction coils because quite a bit of current spikes through.
Did you write your capture code yourself?

What I'm trying to measure is 3 phase 240V, maybe 60 Amp of current max when the pumps startup. my guess is 7-10 points of measurement, I'm kinda Jerry rigging a diagnostic tool here.
10 months ago