Watering trees over a large area
I am building a youth camp in northern Arizona and will be planting a large number of hybrid poplars for shade. In some places the trees run close together every 8 feet or so, other places just a few trees spread out. The water is off a well and I don't want to use anymore than I have to since I have to pump it. Many years ago I worked on a tree farm and we used drip emitters at the trees, poly to the drip emitters, bigger poly to the valves, and hard PVC at the manifolds. The spacing was dense so the runs weren't that long for each valve. The pipe between the manifolds was 2" PVC and we used a pump to keep the pressure high. That said, is that the way it is still done today. The trees will be planted all over a 20 acre parcel and I don't want to spend anymore money than I need to but I also don't want to worry about freezing, etc. The dirt is heavy clay. Is soaker tube an possible option? In the past there were issues with the pores filling with dirt more than with drip emitters. Any comments are welcomed.
Thx
EWB