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Applied Biological Chemistry
Fig. 1 | Applied Biological Chemistry

Fig. 1

From: Contrasting effects of food waste and its biochar on soil properties and lettuce growth in a microplastic-contaminated soil

Fig. 1

Changes in soil properties in incubated and lettuce-cultivated soils. a pH; b electrical conductivity (dS m−1); c NO3−–N (mg kg−1); d NH4+–N (mg kg−1); e available phosphorus (mg kg−1); and f total exchangeable cations (cmol(+) kg−1). Error bars denote ± standard error (n = 3). For different parameters, letters “A, B, and C” and “a, b” represent significant differences among soil treatments in incubated and lettuce-cultivated soils, respectively. According to the Tukey test, having the same letters on two bars implies that soil properties are not different at p < 0.05. Asterisks (*) represent a significant difference (p < 0.05) between incubated and lettuce-cultivated soils

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