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Plant diversity and exudate diversity effects on extracellular enzyme activities. Effects of artificial root exudate diversity on (A) cellobiohydrolase activity [nmol hr−1 g−1 soil] (black bars: control; light gray bars: LOW‐exudate diversity treatment; dark gray bars: HIGH‐exudate diversity treatment) and (B) phenol oxidase activity [μmol hr−1 g−1 soil]. Bars with different letters vary significantly (Tukey's HSD test, α < .05). **: p < .01; ns: p > .1
