Possibly silly question about drip-watering trees
Actually 2 possibly silly questions.
1. I have a sissoo that grows kind of sideways. The trunk is straight for 10 feet or so, bends to the side (away from a large Shamel ash to its south; I think it was looking for light), and then straightens again. So basically the canopy is 75% on the north side of the trunk. I know you're supposed to put your emitters at the dripline. Does this literally mean *at the dripline* if it's skewed like that? Or should the drippers simply form a circle, the same diameter as the canopy, with the trunk in the middle?
2. Same sissoo is on the side of a dry stream -- a slope. Water from the uphill emitters wants to run downhill, obviously. They're not gushing, they're providing the correct amount/rate of water for flat ground. This is the possibly silly question: should I build a 12" or so basin around the emitter to corral the water and let it soak in where it's supposed to? I don't know enough about the physics of water in soil to know whether that will do any good.
Thank you as always for the help!