Subtropical desert (Köppen: BWh)
Elevation: 1090 ft Annual rainfall: 7"
Jackman
Celia Revel wrote:wow, I eat a lot of carrots from Raleys supermarket. Wonder where they are gettting their carrots from. This makes me want to grow my own carrots from rainwater.
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Andrew Jackman wrote:So, let's pretend that I inherited land similar to that above, about ten acres. It gets 10" of precipitation per year, half of it snowfall. It's got a net elevation change of about 20 ft per 100 ft. I've been planning on creating swales (3-6 ft tall) at about every 10 ft of elevation change. To build up the topsoil, I plan on seeding a ground cover mix that's advertised as a "dryland pasture" mix for a few years until I get some trees established. As much as I can, I want to encourage vines to grow that require little moisture, preferably fruit-bearing. The idea is to trap as much moisture in the topsoil as possible and then prevent it from evaporating. I am skeptical about being able to keep any surface water, but Sepp Holzer claims that any climate can maintain surface water.
After a few years, I'm hoping to see a lot more opportunity for planting edible produce, including grapes, fruit trees, grains, and tubers.
Would this be the recommended way to go about this or am I missing something? Thank you.
Tom Rutledge wrote:
What is the hypothetical end goal for the land? Is it to be an income generating space, a hobby farm, a retirement or vacation home or simply a space to return to mostly zone 5 after rehabilitation?
Tom Rutledge wrote:
The distance between swales is important for protecting the areas between them from any winds. Likewise depending on the topography and the prevailing wind directions there could be a fair amount of wind running parallel to the swales which will tend to lessen the protection offered. One solution would be to add some non contour berms or hugleculture between the swales and make them curvy.
Tom Rutledge wrote:
When in doubt, Sepp is right. The question of course then becomes how is Sepp right? My guess is that it'll take a lot more catchment area to gather up enough water for surface storage in the dessert. 10 inches on 10 acres is 8.3 acre ft, or 363K ft^3, or 2.7 M gallons. Figure a 1 inch a week losses on a standing pond (swag), by detecting 10% of the water means there is 698 ft^3 loss per week, which seems to work out to a square ( don't do that ) pond about 90 ft on a side, and as deep as you would like.
Well that sure is interesting... It gives me hope for deserts everywhere. Thank you for helping me to walk through that.
A common trick and thing to pay attention to is how the the site land interacts with the land around it. Taking runoff from upslope and redirecting it into the property can help a fair amount. Roadside ditches are good for this but the water needs to be filtered somewhat due to the general ick of cars and roads. One of the standard processes is to map out the catchment that drains into the property. You might get lucky and find out that there is a huge invisible resource of water just waiting to be politely coaxed into a solution.
With the magnitude of project scale and expenses involved I would recommend as a first step getting a small library of Permaculture books, everything Sepp Holzer has writen, the Permaculture design manual and probably try to get to PV2 if you can. Then read the library. Then take a PDC and try to find permaculture groups in the local area. They'll be able to help out with regional things like what cultavars work better and which equipment operators to use.
This sounds like an awesome project. Good luck with it!... hypothetically.
Jackman
Andrew Jackman wrote:
My objective is to produce enough food to live on, trading for variety. Right now I'm concerned more about just myself and my wife, but we are at child-bearing age and have extended family to worry about, too.
...
As for as actual occupancy, I'm trying work out how much I can do with the county building permit process.
Andrew Jackman wrote:
To clarify, I think what I'm hearing is that low-laying ground cover and trees (as wind-breaks) is not likely to be enough?
Thank you! Your insights are valuable, and I wish you success in your own endeavors.
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William James wrote: Yup. Another idea would be to ditch the carrot and grow sweet potato (higher in beta carotene AND vitamin A) and apricots (a perennial plant).
Praying my way through the day
Jerry McIntire wrote:
Do you eat sweet potatoes raw? I haven't. That seems to be an advantage for carrots.
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Community Building 2.0: ask me about drL, the rotational-mob-grazing format for human interactions.
Sam Boisseau wrote:
So having a well put video out there to share is a very nice result. Not much magic, unfortunately, other than Geoff's magic in putting everything together.
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Zone 3b, Lower St. Lawrence, Quebec
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Seed the Mind, Harvest Ideas.
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Check out Redhawk's soil series: https://permies.com/wiki/redhawk-soil
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