Decision Support System (DSS) for the potato & tomato late blight disease

Obtain Log In:

To obtain a user account contact Ian Small,, or Laura Joseph,

Log In:

Please enter name and password and then, click the submit button. If you need assistance, please send email to


Mobile DSS: Mobile DSS here to use the DSS on your mobile device

The Late Blight Decision Support System works well on the Mozilla Firefox browser.

Observed Weather Station Selection      Forecast Weather Location

The information on this page is used when you run the lateblight simulator. It does not effect information on the Input/Reports page.

Disease Level:  You will need to select a disease level in order to run the simulator.

Fungicide: Please select the date and hour of the fungicide application and the amount that was applied, and then click on the 'Submit Fungicide' button.


To setup alerts please follow the steps shown below. When you modify your settings, please check Alert Status to verify that settings have been defined correctly.

Alert Status

Step 1: Alerts
Select the categories for which you would like to receive alerts. Then, select your preferred method(s) of notification.


Blitecast Only

Cancel Alerts

Step 2: Notification Settings

Please check the appropriate box or boxes.

Email Address:

Email Address on record:   

Text Messages:

Cell Phone number on record:   Cell Phone Carrier:

Farm Locations to Monitor:
You will get alerts for all farms that are checked.
Grower Location:

Late Blight Source:

Irrigation: Please identify the following information: start date, start hour, end date, end hour and total irrigation amount. Then click on the 'Submit Irrigation' button.


Add a Location

Please select your state and enter a new location name. Identify the crop grown at this location.

Please identify latitude and longitude. You can use the map at the bottom of this page, to do this. Move the map so the pointer is on your location.

Please identify growing season start month and growing season end month.