Adhesive tape for apple and pear saw wasp

Currently out of stock. If you have any questions, please contact Matty.

Apple and pear sawfly control is difficult in organic cultivation. No effective substances are allowed for this purpose.
For the time being, some resources are still available in conventional cultivation, but what the near future will look like is uncertain.
In the past, a lot of research has been done into alternative control methods (use of nematodes, fungi, covering the black strip, removing the infestation, ...) but good results have never been achieved.

Apple
For several years (2016-2019), WUR has been experimenting with catching apple sawfly by means of white glued disposable plates.
There was only a limited effect with very high numbers of signs (1 per tree). You will be left with a lot of plastic waste.

In 2021 we conducted demo tests at 3 locations by hanging double-sided adhesive tape before the saw wasp starts flying.
This allows you to create a large catching surface in a shorter time.
In this first year, we saw that in low-pressure locations, the adhesive tapes were equivalent to a treatment.
At high pressure, the result was less good, but still satisfactory.

Pear
We did not carry out a test here, only to see whether this adhesive tape was attractive.
Hung up on March 30, 2021, yielded an average of 380 wasps per ribbon (90x15 cm) on April 1.
This adhesive tape is therefore very attractive for the pear saw wasp.
In Denmark, HortiAdvice has set up a demo trial at 3 locations. This showed that the adhesive tape has about 80% effectiveness in a year with low pressure.

More demos will be built in the coming years.

Results are such that this product is suitable for growers who want to use an alternative method.
Depending on the intensity of hanging out, you need between 200 and 400 meters.
In the trials, 250 adhesive tapes/ha were hung (90 cm x 15 cm).
You do need to have cross threads to which the ribbon will be attached.