Micronutrient content (mg kg−1) of leaves at the end of the experiment as affected by growing medium.

aComposted corn cobs (C), pyrolysed corn cobs (PC), pyrolysed garden wastes (PG), and Pindstrup sphagnum peat moss (P); PC (100%), C (100%), PG (100%), C (70%) + PG (30%), PC (70%) + PG (30%), P (50%) + C (35%) + PG (15%), P (50%) + PC (50%), P (50%) + PC (35%) + PG (15%), and P (50%) + C (50%).bWithin a column, means followed by different letters are significantly different according to Duncan's multiple range test at P*P**P