California TSWV risk assessment
This form gathers data about the risk of damaging TSWV levels occurring in processing tomato crops. The data entered in the form are sent to a web-based spreadsheet where the risk level is calculated. This is a trial version for which the risk index will be calculated manually once a day for all data submitted the previous day. You should receive an email the day after you submit your data giving you the risk status for your field/crop. We are working on a version which will calculate the risk index and email you a response immediately.

All of the information you submit will be treated in confidence. The data may be used for research purposes by the research team for tomato disease management at UC Davis in collaboration with CTRI.

For more information please email Funding for this project was provided by the CTRI.

General information
What email address should we send your risk score to? *
Please enter an email for your risk level below.
Your answer
If there is a name you normally use to identify this field please enter it in the box below
We will use this name in emails to help you identify the field's risk score
Your answer
If you know the GPS coordinates for the location please enter them below (you can skip the next question if you know the GPS coordinates).
Latitude (probably close to 38 N)
Your answer
(probably close to 121 W)
Your answer
What is the nearest named or numbered road to the location? (Skip this question if you gave the GPS coordinates)
Please give the road name or number and the approximate distance and direction from the field
Your answer
What county is the field or crop in? *
Your answer
Plant population Information
Variables for calculating risk points based on variety type and planting density
What is the resistance type of the variety?
Choices are: 0, Don't know, 1. TSWV resistant; 2. TSWV susceptible
What is the approximate planting dentsity
Choices are: 1 (Less than one plant per row foot, = single row 7000 per acre); 2 (2-3 plants per row foot = double row 9000 plants per acre); 3 (more than 3 plants per row foot = double row higher density)
Crop establishment method
Choices are: 1 (Transplanted); 2 (Direct Seeded)
Planting period
Choices are: 1 (Before Feb. 1st); 2 (During Feb.); 3 (First half of March); 4 (mid March through April); 5 (May 1st to 21st); 6 (May 21st to June 5th); 7 (After June 5th)
Planned or actual insecticide program
Choices are: 0 (None); 1 (Broad Spectrum); 2 (Targeted at thrips)
Herbicide use and weed status
Choices are: 0 (Untreated and weedy); 1 (Untreated, moderately weedy); 2 (Untreated or treated but not weedy)
Site information
TSWV risk also depends on the history of the field and the make-up of the surrounding land use
Proximity to known bridge crops for TSWV
These are crops and weedy areas that can host the virus between tomato crops and include: other tomatoes, lettuce, radicchio, fava bean, peppers and weedy fallow. Choices are: 0 (Adjacent); 1 (Less than one mile); 2 (One to two miles); 3 (More than 2 miles)
Proximity of sources of thrips
How close is the nearest crop or field that might have thrips? Thrips hosts include: wheat, pea, alfalfa, tomatoes, lettuce, radicchio, fava bean and weedy fallow. Choices are: 0 (Adjacent); 1 (Within one mile); 2 (One to two miles); 3 (More than two miles)
If known, please give the previous crop type in the field
Your answer
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