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Re: Filtering & Soaker Hoses

> From: Elizabeth Bonfiglio <ebonfiglio@yahoo.com>
> To: veggie-list@eskimo.com
> Subject: Re: Filtering & Soaker Hoses
> Date: Wednesday, June 10, 1998 5:25 AM
> 
> Where did you get the "drip tape" T-tape? 

1.  DripWorks	http://www.dripworksusa.com 
2.  Peaceful Valley Farm Supply	http://www.groworganic.com
3.  Watermiser Drip Irrigation	800-332-1570
4.  Also available at some garden centers - more expensive.

> And what brand names are they listed as. 

T-Tape, TSX T-Tape

> Can you tell me more about how you used them and how they worked.

T-Tapes come in various thicknesses and flow rates.  I use the thickest 15
mil (more durable) and 40 gph/100' flow rate (less likely to become
plugged). The 40 gph/100' tape has emitter slits spaced at 8'' intervals
along the tape.  I run them at 15 psi which is the high end of the
recommended pressure range.  My veggie beds are 4' wide, various lengths. I
plant in blocks on a grid instead of in rows (modified square foot method)
and run 4 tapes in parallel 12 inches apart.  I've tried 3 tapes at 16 inch
spacing but didn't get good water distribution midway between the tapes. 
The tapes are under 2 ' of mulch (composted horse manure covered with a
light layer of wheat straw).  Water requirements can vary considerably
depending on exposure, soil condition, mulching, temperature, humidity,
etc.  The only way I know to determine when to water is to check the soil.
A month ago, I was watering twice each week but have increased the
frequency to every other day as the temperature increased and humidity
decreased.   Lower water-use veggies like pinto beans, teparies, and some
native squashes are on a separate system.  Some of my tapes have been in
use several years, have never become plugged (unlike soaker hoses) and
water distribution is still uniform (also unlike soakers).

Olin Miller <millero@worldnet.att.net
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