ET test controller

Discussion in 'Irrigation' started by londonrain, May 25, 2008.

  1. londonrain

    londonrain LawnSite Silver Member
    Messages: 2,129

    I have a WM 1600 controller setup in my office( no valves connected), with a weather station outside, so I can evaluate what the water requirements/ deficits are each day...I set 95% of my controllers on a M/W/F schedule...I will be making a log of the run times on the different type of turf, shrubs, soil, etc... I believe this will help me in my baseline setup of controllers that I manage monthly ... on demand ET values each day...
     
  2. FIMCO-MEISTER

    FIMCO-MEISTER Banned
    Messages: 18,668

    Are you going to compare it to a moisture sensor? I like the SL auto adjust feature but I do wonder sometimes on its application need accuracy. The more you go in this direction the more info and testing you feel prone to do. I used to set for no more than two waterings a week but now I give it permission to water three days a week and put the SLW delay on 72 hours. If I didn't have to worry about yard services I'd set it on every third day watering.
     
  3. Kiril

    Kiril LawnSite Fanatic
    Messages: 18,308

    LR,

    Scheduling software: http://www.irrisoft.net/wr/insite.cfm
    WUCOLS: http://www.owue.water.ca.gov/docs/wucols00.pdf

    While the WUCOLS is CA specific, you can still use the species factors in other parts of the country given the large number of plant zones found in CA .... and a little common sense. :)

    WMSL uses a very basic application of the landscape coefficient method. You can derive very accurate, species specific, base watering schedules using the above method. You also will need to monitor the site for the first couple of run cycles.

    Typically I will let the soils dry to an appropriate AD value, then take a number of soil moisture readings in each hydrozone before allowing the new schedule to run. Once the schedule has run and the soils have reached field capacity, I will take another set of measurements. My final set of measurements will be on the day prior to the next scheduled run cycle and a couple of days after (once again once field capacity has been reached).

    With this information you can make adjustments to the schedules as needed. Ideally you would want to run your tests during your average summer temps.
     
  4. FIMCO-MEISTER

    FIMCO-MEISTER Banned
    Messages: 18,668

    Nice info Kiril. Thks for sharing. Your persistence in sharing knowledge is very admirable in my book. Don't take this as patronizing. I'm still going to give you a hard time.
     
  5. londonrain

    londonrain LawnSite Silver Member
    Messages: 2,129

    Thanks for the links......
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 22,155

    Post some pics, hot shot.
     
  7. Kiril

    Kiril LawnSite Fanatic
    Messages: 18,308

    I expect no less. :laugh:
     
  8. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 22,155

     
  9. Kiril

    Kiril LawnSite Fanatic
    Messages: 18,308

    [​IMG]
     
  10. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 22,155

    Smart a.s computer expertise doth not exhibit irrigation masterpieces. Pics?
     

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