What's Better - One long session, or multiple shorter sessions?

Discussion in 'Irrigation / Sprinkler Forum' started by vivona, Oct 20, 2010.

  1. vivona

    vivona New Member

    Jun 26, 2006
    I saw a video that claims for sandy soil (mine is 85% sand) it is better to run through the irrigation program three times, each time putting down 1/3 of the intended total time for each zone. For instance, if you had 6 zones and each required 30 minutes, you set the zones for 10 minutes each and run the program three consecutive times. The total water applied remains the same, but runoff is decreased and the wet ground will hold the next application better rather than have it percolate deeper into the ground.

    Here is the video http://www.youtube.com/user/IrrigationTV#p/u/15/TuV5x7-uNGM The comment starts about 2:35 into the video.

    I would be interested in your comments, pro or con.
  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    In my area we have lousy soil, and if you water for more than about 5 minutes, it starts to run off. So 2 or 3 shorter intervals is definitley better. In real sandy soil, I don't know if it matters. I think you just have to water more often.
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  4. vivona

    vivona New Member

    Jun 26, 2006
    I guess one downside is that the pop-up heads go through three times as many cycles so they may wear out sooner.
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