Due to the intensive and globalised nature of the business of material multiplication, there is a risk to agriculture that particularly dangerous or harmful diseases and pests are introduced and spread. APS being part of the Federal Phytosanitary Service (SFP) help to prevent the dispersion of quarantined organisms (QO, for example fire blight, sharka, Diabrotica).
The nuclear stock at Wädenswil is used to produce and distribute certified fruit tree propagation material.