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ArTurf
05-24-2012, 01:14 PM
I haven't done much drip so I need some advice. I am going to try Netafim .6 on 12" spacing. How long would you run the zones and would you space them out into 2 start times to give time for soak in? Working on clay.

grassman177
05-24-2012, 04:26 PM
U can calculate the rate to get the time needed.i usually run them for 45min to 1.5hr depending on soil, environment,etc and emitter
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Mike Leary
05-24-2012, 04:44 PM
I haven't done much drip so I need some advice. I am going to try Netafim .6 on 12" spacing. How long would you run the zones and would you space them out into 2 start times to give time for soak in? Working on clay.

Netafim has a chart that answers the question. The thing you've got to figure is the root depth of the plant material, young and mature.

grassman177
05-24-2012, 04:45 PM
What he said too
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rlitman
05-24-2012, 05:06 PM
Netafim recommends a different flow and spacing for clay:
http://www.netafimusa.com/landscape/products/techline-cv-tech

Oh, and from what I've read, spacing out subsurface drip into two start times actually reduces the water spread. This can lead to shadowing of the drip line.

Mike Leary
05-24-2012, 07:32 PM
Buy a 36" moisture sensor, they're under a $100.00.

bcg
05-24-2012, 07:33 PM
.6gph on 12" spacing is about .9"/hr. Infiltration rate on pure clay is about .18"/hr.

You need to cycle and soak if you don't want any runoff. If it's in a bed with mulch on top, you can fudge a little since the mulch will absorb a fair amount of water before it can run off. Technically correct would be run 10m, soak 50m, repeat until you've applied what you want to.

Kiril
05-24-2012, 09:53 PM
.6gph on 12" spacing is about .9"/hr. Infiltration rate on pure clay is about .18"/hr.

A "pure" clay could have a steady state infiltration rate of 0.04 in/hr or lower. The range for a clayey soil is 0.04-0.20 in/hr without consideration for structure or organic matter.

Technically correct would be run 10m, soak 50m, repeat until you've applied what you want to.

There is no technically correct cycle and soak, it is site dependent. Maximum suggested PR rates on clayey soils range 0.2-0.06 in/hr depending on slope, but again correct times for cycle and soak are site dependent. The goal is to avoid ponding and runoff.