Research and IPM
Interactive Tools and Models: Citrus Thrips Scarring
Prediction ModelTesting Phase*
San Joaquin Valley, California
This model, validated so far only in Tulare County, California, is a
first step in developing a reliable prediction of citrus thrips damage
with advance warning. It estimates the degree of first scarring of Navel
oranges by citrus thrips, Scirtothrips citri, from weather data
that accumulates prior to petal fall.
*Validation of this
model has been limited, and you are encouraged to test the model to see
if it is helpful to you under your field conditions. You can also
help us to test and improve
the model. Disclaimer: The University of California and the authors of
this model do not assume any responsibility and cannot be held liable for any
loss that may result from using predictions from this model.
Estimate scarring using your weather data file
Remember to supply maximum and minimum temperatures from January 29 through
the end of bloom.