subrubangreen...

At the risk of sounding as if I am associated with them, (I'm not), I once again have to tout the "Netafim" drip irrigation products, (link below). I've used this stuff for (7) years at least and it has always worked great. It's lying right on top of the ground in this desert heat and I've never had a problem with it, nor have any of the emitters clogged-up. It's also very-very easy to work with. I've also incorporated a fertilizer injection system in to it, (fertigation), and it was very inexpensive to do. I would highly recommend it to anyone. I plan on shooting a couple of photos of it later today or early tomorrow and will post them.

As far cutting-off the water to certain areas that's simple as well, all you have to do is to install shut-off valves in the system. This system is set-up on timers. Again, I'll post some photos of it a little later.

Here is a link that might be useful: Netafim Drip Irrigation System

I use drip tape in my garden and it does not weave well. It is designed for straight runs and while it can tolerate a few bends, it kinks rather than making smooth curves like a soaker hose.

The first photo is one part of my veggie gardens showing the Netafim drip irrigation tubing that I installed. In the foreground is the irrigation box that holds the fertilizer injection system I rigged-up.

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This second photo shows the fertilization setup I rigged-up. All it is - is a Miracle grow hose sprayer that I modified slightly and installed in to the PVC water pipe that provides water to the garden through the drip tubing. When it's time to fertilize all I do is unscrew the plastic bottle at the bottom of the sprayer and pour-in the water soluble fertilizer of my choice, (NOT Miracle Grow I can assure you), and the next time the timer goes-off I fertilize my veggies.

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The last photo is of the shut-off valves I use in my gardens. The garden in the first photo is divided in to two sections of (5) rows each. Each section has a shut-off valve that I can use to only water or fertilize one section at a time depending on what is needed.

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This whole setup was very inexpensive to build but saves countless hours having to fertilize and water. By introducing the fertilizer through the drip system it not only saves much time, but I don't disturb the root systems of the growing vegetables by scratching-in granular fertilizers.

I hope this helps...

Greg
Nevada

Check out this thread. I think you'll find everything you are looking for.

http://forums2.gardenweb.com/forums/load/cornucop/msg0401565512978.html