Fig. 8From: Carbon-enriched organic amendments differently affect the soil chemical, biological properties and plant biomass in a cultivation time-dependent mannerPearson’s correlation matrix of results after a 12 weeks and b 24 weeks of experiment. The stars indicate a level of significance in statistical difference between the variables: *p ≤ 0.05, **p ≤ 0.01, ***p ≤ 0.001Back to article page