Web-Based Decision Support for Sustainable Pest Management in Fruit Orchards: Development of the Swiss System SOPRA - Efficient Decision Support Systems: Practice and Challenges from Current to Future - page 381

activity (e.g. Graf et al., 1996; Graf et al., 1999; Graf et al., 2001a; Schaub et al., 2005; Graf et
al., 2006).

Grapholita lobarzewskii
Wädens w il 2 0 06

1.0

0.8

Pupae F
Pupae M
Adults F
Adults M
Eggs
Larvae
Larvae in
diapause

0.6

0.4

0.2

0.0

1 Jun 06 1 Jul 06 1 Aug 06 1 Sep 06

50% larval emergence:
Organophosphates in case of very high pressure

Flight starts:
Mating Disruption
dipensers applied

20% larval emergence:
Organophosphates in case of multiple indications
Monitoring: Larval tunnels on fruits

Montitoring:
pheromone
traps applied

Larval emergence starts:
Lavicides in case of strong flight (e.g. molting accelerators)

Oviposition starts: Metamorphosis inhibitors (e.g. fenoxycarb)

Fig. 6. Simulated relative phenology by example of the Smaller fruit tortrix with important
events in the lifecycle and according suggestions. F - females, M - males.

3. Local simulation tool

The locally based user interface is designed as a common MS Windows application in order
to facilitate the simultaneous use of the different species models, and to standardize the
weather data input for all models. The simulation of habitat temperature is integrated in the
application with a flexible weather module. Both numerical and graphical outputs are
implemented. For further pests a routine is implemented to compute temperature sums for
any user defined temperature threshold.