SHOP PRODUCTS
Houzz Logo Print
gojosan

'Wick-Tube': Low-tech/cost auto-watering/drought system

gojosan
16 years ago

Hi all!

I am new here and I thought I should offer a thread for you all. I am very impressed with the content here and the knowledge of this forums members :-) . I have learned from lurking here for a little while. Thank you!

A friend of mine wrote to me describing a very-low tech but ingenious auto watering system developed in Ethiopia. They needed a way to water the plants without wasting any water. Drip-emitters haven been proven to conserve the most water while offering the same growth (or better) as traditional watering methods. Unfortunately this technology is out of reach to most of the developing world. Thus this low-tech alternative was developed, it is more labor intensive but it offers even more water conservation vs. drip-emitters. While this method may not be feasible as a sole water source for fast growing seasonal veggies like tomatoes it will help conserve water and keep the moister level above 30% during a drought. In Ethiopia the wick tube was used mainly for growing trees, a main horticultural staple there.

Wick Tube:

1. Basically you take a PVC tube (1-2" in diameter) and cut it to about .75% of the container height.

2. On one end make a diagonal cut and hot-glue on a piece of door-screen (or some kind of metallic screen) over the diagonal end.

3. On the opposite end you glue a screw-on end-cap attachment so you can screw on a PVC "end-cap" to the tube.

4. When you fill your container with soil bury the diagonal end near the bottom of the container (deep rootzone). You should only have the cap and a bit of tube above ground. The tube above ground gets heated by the sun which evaporates some of the water within the tube.

5. Unscrew the cap and fill the tube with PRE-MOISTENED water crystals. Screw the cap back on.

6. The soil in contact with the screen will wick the water out of the water crystals. To re-fill the water crystals just add water to the tube :-) .

7. Then you can mulch the top of the container to help keep moisture from evaporating and to keep the soil evenly moist. This will also help keep the soil cool, all of which will help protect the tiny root hairs near the soil's surface.


Hope this is helpful to someone!

Here's a pic of the wick tube:

(Note: I tried using inline images from imageshack.us but it may not work)

[URL=http://img231.imageshack.us/my.php?image=reservegc1.jpg][IMG]http://img231.imageshack.us/img231/3954/reservegc1.th.jpg[/IMG][/URL]

[url=http://img231.imageshack.us/my.php?image=reservegc1.jpg][img=http://img231.imageshack.us/img231/3954/reservegc1.th.jpg][/url]

Here is a link that might be useful: {{gwi:26306}}

Comments (3)