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please show me your irrigation systems

 
Leigh Tate
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Location: Southeastern United States - Zone 7b
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I'm wanting to revamp aspects of my garden and irrigation is at the top of the list. I live in a hot humid climate which can have long periods of no rain. We have about 2400 gallons of collected rainwater for irrigation.

My current method is to use a hose from the rain collection tank and hook it up to a "leaky" pipe, which I move from bed to bed. Not only is this time consuming, but also I must lay it on top of my thick leaf mulch, so I lose some of the moisture to evaporation. Plus, it takes a lot of water to penetrate the mulch and soak the soil. I need ideas for improving on that!

I would love to see how others have dealt with irrigation. So please, show me your irrigation systems!
 
Tereza Okava
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mine is even worse- a hose coming out of a large rain barrel. It takes a lot of time. I have scouted out old leaky hoses thinking i'd just be able to leave them on the ground to drip but either there isn't enough pressure or some other finicky problem. I'm hoping someone else has some good ideas!!!
 
Nancy Reading
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Leigh Tate wrote:My current method is to use a hose from the rain collection tank and hook it up to a "leaky" pipe, which I move from bed to bed.


I used to have a somewhat similar system in my old polytunnel, except the leaky hose (it was an old garden hose with holes made in it) was left in the beds, I just connected the running hose to each bed in turn and left it whilst I did other things. Over the years the hose gradually got buried, so it was mostly under the mulch which accumulated. It worked well for me.
In my new tunnel I'm setting up a sort of self watering sub irrigation system with stick bundles wrapped with sheep fleece. It's experimental, so I don't know yet how it will turn out, but hopefully will water the tunnel inside when it rains outside (most of the time here!). I was hoping to eliminate plastic hose pipes.
 
Cristobal Cristo
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Location: Sierra Nevada foothills, 350 m, USDA 8b, sunset zone 7
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My system consists of:
-a filter
-main line of 1.25" pipe buried shallowly and directly connected to the well pump
-3/4" risers with ball valves to supply water to 3/4" black lateral tubes with emitters
-lateral tubes are plugged at the ends or on some lines I have a valve, so I can fill a bucket at distant parts of my orchard
-pressure compensating 40 l/g (10.6 Gph) emitters
-1/4" dripper tubes so I can direct the water to exact spot; they should be the as flexible  as possible so they will not disconnect when the laterals move (a lot) due to temperature changes

There is nothing more and I like keeping it this way. When I need to extend the system, I add more underground pipes and more tubing with emitters. I have tried 2 types of micro sprinklers before, but they did not work too well due to too low pressure.
I use stainless metal clamps for all tube fittings.

I irrigate around 200 fruit trees and 60 fruit bushes. I use 2 emitters per tree and 1 emitter per young fig/fruit bush. I use the same emitters on the 3 vegetable rows which I just set it up this year.
The well pump yields 100 l/minute so it can supply 150 emitters at a time.
In summer I irrigate for 30 minutes per 150 emitters, so in theory a tree should get 40 l of water, but despite the fact that the emitters are pressure compensated, the upper part of the orchard gets even 2 times less water.

I clean the filter once every 8 irrigations or when i notice lower yield.
I irrigate usually in the evenings so there is less evaporation loss.

There is a fair amount of plastic, but I hardly ever trash anything. The black poly pipes, if destroyed accidentally by me with the tractor, I use for some short runs. I always cut out the emitters from the damaged tubings and use them somewhere else. The filter has rings that I just clean with water.
I have to say that only with the irrigation I'm finally having some crops - more and more every year in terms of amount and variety. In my area, sometimes it will not rain a drop for 6 months.
 
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