First a little background; I have a 1/2 acre lot on the East side of the Las Vegas Valley (Nevada), water is expensive here so the previous owner just turned off the irrigation system about 6 years ago, since acquiring the property about 3 years ago I have been exploring different ways to utilize the land, cut down on dust, and not bankrupt myself with water bills.
For various reasons I kept coming back to fruit trees. A little research led me to a system of high density orchard keeping called "backyard orchard culture" and low and behold the University of Nevada has an experimental orchard here that has been testing those practices in our valley since 1995! That was huge, now I knew it could be done and more importantly what to do do and what not to do.
I put my orchard in 4 N-S rows 9' apart. The 2 Eastern most rows have 7 trees each spaced 4' apart and the 2 western most rows have 4 trees each again spaced 4' apart. The first picture is a view looking west.
Now comes the Greywater part. I'm cheap and hate wasting anything so I got to thinking about greywater, my laundry area (pic 2) is on the back porch and had been just dumping in the backyard because I hadn't tied it into the septic system yet. I had to install a surge tank (pic 3) which collects the water from the washing machine and allows it to be released in a slightly slower manner into the drip system. The drip system came from IrriGRAY superior graywater performance affordable price and is designed to handle greywater, it came with a filter (pic 4), 5/8" poly distribution line, and 150' of 1/2" dripperline with 4 gallon per hour drippers built into it every 12". My orchard area has a slight N-S fall to it so I ran the dripperline 1' north of each line of trees, these lines are run E-W and therefore end up being spaced 4' apart.
The final part of the system is mulch, I hauled in enough ground up tree trimmings from the tree service companies to cover the entire orchard area to a depth of 6". The system has been operating now for 4 months. I can go anywhere in the orchard and pull back the mulch, even dead center between two sets of lines, and the soil is moist and full of worms. The filter is a 400 micron filter and it is claimed you only need to clean it twice a year, I have cleaned it twice now and neither time did it need it.
Max
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