1 - Phytosanitary Resources

Survey Procedures
For further information, contact the EDP-National Survey Supply Coordinator.
Figure 4-14 Bucket Trap (Russell IPM Ltd., http://
www.russellipm-storedproductsinsects.com/productdetails.php?corpprd_id=24)
Trap Densities and Servicing Schedules
Trap densities for all pheromone-baited traps used to survey for Tuta absoluta
in Corse, France were recently published (FREDON-Corse, 2009a). For areas
larger than 2500 m 2 , 4 traps/ha (2.47 ac) are recommended. For areas smaller
than 2500 m 2 , only 1 trap is required. These trap densities are based on the fact
that the attractant is a pheromone lure and have nothing to do with the trap type
(pan trap, Delta trap, or other).
Check traps at least once per week, and count and remove the captured moths.
Replace the pheromone lures every 4 to 6 weeks. Replenish or replace the
trapping liquids and/or sticky inserts on a regular schedule.
Russell IPM (Al-Zaidi, 2009) has the following guidelines for Delta traps for
Tuta absoluta in greenhouses and open fields:
Table 4-2 Guidelines for Delta Traps for Tuta absoluta in Greenhouses and Open
Fields for Survey or Control 1
If this location: Then: And: For this total:
Greenhouses 1 trap inside the entrance 1 or 2 traps near the
warmest part of the
greenhouse
Open fields
1 Russell IPM (Al-Zaidi, 2009).
2 traps near the edge of the
field from all four directions
to help establish the
direction of the infestation
4 or 5 traps/ha
2 or 3 delta traps/ha 8 or 9 traps/ha
4-16 Tomato Leafminer 6/2011
Emergency and Domestic Programs