Saturday Linkages: Mobile Pods, Soil Erosion and Getting Doored by a Porta-Potty

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A pod on wheels. Image: Relaxshacks.com

A Micro Pond-Side Reading Pod/Cabin for an NYU Professor: http://relaxshacks.blogspot.com/2014/06/a-micro-pond-side-reading-podcabin-for.html?spref=tw 

7 Ways to Prevent Soil Erosion – http://tafarm.us/1qIPpp

Interactive: Inside the changing American diet http://ti.me/1hPvPrK  via @TIMEHealth

Maybe there’s hope? Report Offers a Way For California to Become Water-Sustainable http://www.kcet.org/news/redefine/rewild/commentary/report-offers-a-way-for-california-to-become-water-sustainable.html …

Man on bike strikes porta-potty door; two hurt: http://bit.ly/1pisQdq 

Could a medicine used to treat gout also save our citrus? http://www.mnn.com/earth-matters/wilderness-resources/stories/could-a-medicine-used-to-treat-gout-also-save-our-citrus …

For these links and more, follow Root Simple on Twitter:

In Praise of Poultry Staples

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A neighborhood chicken tragedy involving a coyote reminded me of an important coop building detail worth repeating:

Use galvanized poultry staples not staple gun staples to secure your 1/2 inch hardware cloth (and don’t use chicken wire–the gaps are so big that raccoons can reach right in and eat your poulrty through the wire). Poultry staples are nailed in with a hammer. I use a pair of needle nose pliers to hold the staple while I hammer it home. Regular staples rust and are not strong enough to keep out predators.

A last detail is to periodically inspect coops for possible weak points. I’m overdue for this. I’ve scared away a coyote twice now this year in our backyard (during the day!).

003 Cooking From Scratch, Tortillas, Fencing and Listenter Questions

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This week on the Root Simple Podcast Kelly and Erik discuss cooking from scratch, making tortillas, bathroom catsfencing and answer a reader question about chickens in small spaces.

If you want to leave a question you can call (213) 537-2591 or send an email to [email protected].

The theme music is by Dr. Frankenstein. Additional music by Rho.

A downloadable version of this podcast is here. You can subscribe to our podcast in the iTunes store. Note that it takes a few hours for the new episode to show up in iTunes.

What’s the Best Solar Food Dryer?

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Appalachian Food Dryer. Image: Mother Earth News.

Dehydration is a great way to put up food. Second to freezing, it’s the best way to persevere nutrition without adding sugar or salt. And if you use the power of the sun, you won’t need to spend any money on electricity.

In a desert climate you can just put your food out on screened trays. But just a bit of humidity in the air makes this approach risky. Food can spoil before enough moisture is removed. That’s why you should build a solar food dryer.

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Brace Direct Food Dryer. Image: FAO.

There are two basic designs for solar food dryers: direct and indirect. Direct dryers are just a box with a piece of glass on the top. Indirect dryers use a box to collect the heat of the sun and then, thanks to the fact that hot air rises, take that heat up into an enclosed box that contains the food you want to dry.

The Poistk Dryer

The Poisson Indirect Dryer. Image: Mother Earth News.

Which design works best? Dennis Scanlin, Coordinator of the Appropriate Technology Program and Professor of Technology at Appalachian State University in Boone, North Carolina has been studying solar food dryer technology for decades.  According to Scanlin, indirect drying is the way to go. Scanlin tested three dryers, the Appalachian Solar Food Dryer (an indirect dryer that he invented) against a direct dryer developed by the Brace Research Institute and the Poisson indirect dryer. In an article in Permaculture Activist, “Evaluating Solar Food Dryers: Stocking Up with Solar Power,” Scanlin says,

The Appalachian indirect dryer produced higher temperatures than the other two dryers and also removed more moisture from the tomatoes drying inside each day. In one test, the Appalachian dryer removed 32 oz. (0.95 L) of water during ta day, while the Brace direct dryer removed only 20 oz/ (0.59 L), and the Poisson dryer only 15 oz. (0.44 L). The Appalachian dryer was able to remove as much as 3.73 lb. (1.69 kg) of water in a single sunny day from tomatoes drying inside.

Scanlin also notes that direct dryers degrade the quality of the food and possibly nutritional value due to direct UV exposure.

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Our Appalachian Food Dryer, badly in need of a paint job.

We built a Appalachian Dryer several years ago and it works great. You do need to remember to bring in the food at night to prevent rehydration and spoilage (for some reason I often flake out and forget to bring in the food). For awhile I had an electric Excalibur Dehydrator on loan and it’s a lot more convenient. But, of course, it uses electricity and makes a lot of noise.

Since I built my Appalachian Dryer Scanlin has decided that it’s not necessary to use insulation. This makes the project even simpler. For just around $200 worth of materials you can easily make an Appalachian Dryer out of plywood nails and screws.

You can find plans for Scanlin’s dryer here.