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Gravity fed drip irrigation, semi-automated
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== An impression of our garden == ===<gallery > |width=180 |height=99 |padding=5 |lines=4 |align=center Image:HPIM2729.JPG| Initial coarse filter Image:tank_and_filter.jpg| Above ground tank + sand filter Image:Gardena adjustable dripper.jpg| The drippers I used Image:1st try middle spring 2013.jpeg| My 1st attempt Image:FreshlyPlanted.jpg| April, shortly after planting Image:4_Aug_15_Left_Side_Tomatoes.jpg| 4 Aug. left side Image:My_Tomatoes.jpg| Right side on 5 Sept. Image:Filter V2.jpg| Improved filter w/air release Image:Start year 3_20160512.jpg| A new year begins Image:Another filter.jpg| An even better filter! </gallery >=== [[Media:Drippers with cleaning.ogg|Drippers running, one slow, so it gets cleaned]] The drippers are adjusted to provide approx 100ml of water per hour when the tank is full and will gradually decrease during the day as the tank empties. I estimate that each plant receives 2l water over a 24 hour period. At this time the tank is refilled, bringing the drip speed back to 100ml per hour. With time, dirt and/or algae collect on the dripper, decreasing output and must be cleaned away. We use an old toothbrush to clean and open the dripper to full open to flush dirt out of the tubing and dripper. Grass cuttings are spread at the base of each plant as a mulch to reduce evaporation. === Drip adjustment === To begin the season, a glass was placed under a dripper and left to run for 1 hour and adjusted until 100ml dripped per hour. All plants were set to a similar drip rate and allowed to run. During the summer we experimented with more or less water per plant and although we found it difficult to always have the same drop rates, but no records were kept since it was mainly to ensure that the system would work as expected. In hot, sunny times more water was released, but without sensors in the earth it's difficult to know what amount is correct. The system was never turned off, meaning it dripped 24 hours per day, but very slowly. === Plants === 16 Tomato 10 Paprika Various others including Eggplant, Cucumber, Green Beans, salad, herbs and spices. === Big garden === Multiple basic gardens share the same water source for an economical way to feed entire villages. [[File:Drip garden multiplied.svg|thumb|center|Multiple gardens share water]]
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