Pear sawfly (Hoplocampa brevis): Catch that fly (BIOFRUITNET Practice Abstract)

Summary

Catching sawflies reduces the need for intervention and lowers damage.
Practical recommendations: 1) Fixing the white sticky tape. Start before the first flowers are open. There is no prediction model for the start of the flight of the pear sawfly. • Hang 150-250 sticky tapes per hectare, depending on infection pressure. • Fix the sticky tapes with staplers between the horizontal wires of the trellis system in between the trees. • In orchards without a trellis system, research about an effective method of fixing the tapes is needed. • No branches should cover or move against the sticky tapes. • One person on the working platform for the top wire and two persons for the lower wires are needed. • Two rows can be done at once. • The distance between the wires can vary from 1 to 2 m. Start at the top wire and go down to the second (lower) wire. • Remove the bands soon after flowering to prevent bycatching bees and natural enemies. 2) Monitoring the effect. • Control the number of egg-laying stitches in the flower bottom. A threshold for pear is not known. 3) Direct control measurements. • When necessary, use Quassia or NeemAzal-T/S at bloom/petal fall. • Check the permission status for Quassia in your country. • Use no NeemAzal-T/S on Conference and other susceptible pears. 4) Costs. • 255-502€/ha, depending on length and number of tapes (length 1 or 2 m, sticky tapes: 150-250/ha, 10-14 hours per 18€/hr, tape 0,5€/m).