shoot: root biomass of tomato plants in Experiment 1 grown in a thoroughly washed compost-sand mix at 1:5 ratio in two replicate trials, harvested at 48 and 51 days after transplanting, respectively.
Cont: Control; ACE: Aerated compost extract;
NCE: Non-aerated compost extract;
SACE: Sterilised aerated compost extract;
SNCE: Sterilised non-aerated compost extract Within a trial, means with different letters indicate significant difference (P < 0.05). Vertical bars represent the standard error of the mean (n = 8).
