The experiment consisted of four levels of Cd addition (0, 5, 10 and 20 mg kgK1) and four treatments: control,
earthworm inoculum (Ew), mycorrhiza inoculum (M) and earthworm–mycorrhiza inoculum (EwM), giving 16 treatments
each with three replicates, arranged under a randomized block in a greenhouse, with temperature control
(22–25 8C), supplemented with additional illumination (with a light intensity of 250 mmol mK2 sK1, under a 14/10 h—light/dark cycle).