Directions & Conditions for Use

Model Conditions for use:

  • It is critical that a historical irrigation frequency and quantity is known or established (such as a normal weekly amount of 4 gallons/vine/week). Please see the page “Establishing Weekly Normal Amount”.
  • In vineyards where soil has a high water holding capacity or irrigation occurs only once or twice a season, this Model may not be applicable. However, using the Model in these types of vineyards to irrigate just prior to a temperature spike may still provide an increase in irrigation efficiency.
  • Under drought conditions, a lack of winter rains may require earlier irrigation than the Model directs.

To obtain your area recommendation:

  1. The first time you use the Model, you will need to create an account.

    • Below the user login on the home page, click on the link “create new account”.

    • Enter your email address, zip code and create a password. Accept the terms and conditions. Only one zip code can be monitored per account. If you need to monitor more than one zip code, you will need to create another account with a second email address.

  2. Thereafter, log in using your email and password. You will need to login each day to refresh the directive. You will be logged out automatically after 20 minutes.

    • Start checking the directives around April 1st.

    • Do not irrigate until the first “Irrigate today” directive appears.

    • It is imperative that you check the website daily during the irrigation season.

  3. To the right of the zip code, you will be given a directive of “Irrigate Today” or “Do not irrigate at this time”.  

  4. If the directive states “Irrigate Today”, you MUST irrigate.

    • Apply all irrigation water on that day. Do not irrigate over several days.

    • Refrain from irrigating in the heat of the day.  

  5. To the right of the directive, there are three possible irrigation amounts based upon your normal watering history (Click the tab at the top fo the page, “Calculating Normal Amount” to learn how to calculate your weekly normal amount).

    • 1X    = the normal amount .

    • 1.5X = one and a half times the normal amount.

    • 2X    = twice the normal amount.

  6. Below the zip code, a list of all past irrigation days from the current season will be displayed. The history is refreshed on December 31st of each year.

  7. Click on the “wunderground” link displayed under the zip code to be linked to the website.