Welcome to the WSU Decision Aid System
The WSU Decision Aid System (DAS) is now updated and ready for the 2009 field season. Updates include a completely new interface with the following new features:
- Google maps is now used to help users select AWN stations and input your custom weather stations.
Google maps also provides you information that allows you to see the distance from your orchard and differences in elevation. - We have a summary sheet that will allow you to look at a color-coded graphical output of any particular model for all sites in your profile.
- Buttons will be available to take you specifically to the complete model output for that pest and site.
- We have improved the import routines for user-provided weather data for custom stations.
- We have added the historic weather data feature to allow you to go back and compare model output on any two days
for any model at any AWN site. This allows the users to compare when a treatment was supposed to go on and when it actually when on to help understand where control problems may have occurred. You can make up to four comparsions at the same time. - We have added a model for Oriental Fruit Moth that will calculate degree-days.
A full printout of the season can be obtained from the historic weather section for inclusion with Mexico quarantine regulations.
The full OFM model is not available because it has not been validated in Washington. - There are organic recommendations for all the insect models and they are being added for the disease models shortly.
- We've added a "data grid" feature that allows the user to see weather data and model output for the last 10 days and the forecast for the next 10 days.
Cherry Mildew
Cherry powdery mildew is the most destructive disease
in Eastern Washington and Oregon cherry production
areas. The disease is common on cherry foliage, but can
also attack developing fruit if rains occur late in fruit
development. The new model should help with
predicting when critical periods may occur and help with
your management decisions.
Peach Twig Borer
Peach twig borer (PTB) attacks apricots, nectarines,
plums and prunes, as well as peaches. It can kill twigs
and disfigure or infest fruit. The damage is similar to
that caused by oriental fruit moth. The developmental
thresholds for PTB are the same as codling moth. So the
same method of calculation degree-days is used in this
model.
Custom Weather Stations
DAS users now have the option of
using their own weather station
data. You must first define the
station under "My Profile".
Users must read and agree to a
disclaimer before using this option.
Once the station is defined, data is
entered either by pasting or
entering directly. A tutorial is
available to help you. The 10-day
model predictions use a NOAA site
specific forecast for your location.
The DAS Recommendations Database
The expert database used to
generate the DAS pesticide
recommendations was updated to
reflect the most recent information.
More pesticide and management information is available at:
No Biofix Model Now Standard for Codling Moth Model
Our data shows that the no-biofix model is as accurate as the biofix model that has been used in Washington for the last
25 years. In 2008, the model was temporarily removed because we had emergence occurring so much earlier than at anytime
in the past 28 years. However, egg hatch data (the key part for CM management) was monitored closely and the no-biofix
model again performed as well as the biofix model in 2008. The no biofix model is simpler to use and eliminates mistakes
associated with poor trap catch in low pressure or mating disruption orchards. Traps still need to be placed in the orchard
and followed to assess pest pressure, but are not needed to set biofix.