No. If you're sure sawfly's the problem (and not Plum Moth, much more common) the info in the link below might be of interest

http://www.gardenaction.co.uk/techniques/pests/plum_sawfly.htm

One of the best forms of sawfly control is organic insecticidal soap you can pick up at any garden center. I mentioned "organic" because it breaks down into its basic components after 10 days and won't harm the environment or unintended creatures.