Table 1: Experiment planning.

240 Mycorrhizal plants 240 Non-mycorrhizal plants
120 plants from cultivar elegance planted 120 plants from cultivar new white planted 120 plants from cultivar elegance planted 120 plants from cultivar new white planted
40 plants on A soil 40 plants on B soil 40 plants on C soil 40 plants onA soil 40 plants onB soil 40 plants onC soil 40 plants onA soil 40 plants onB soil 40 plants onC soil 40 plants onA soil 40 plants onB soil 40 plants onC soil

A: Pathogen-free soil; B: F.o.r. - infected soil; C: F.o.r. - infected soil, plants sprayed monthly with the commercial systemic fungicide Enovit metil.