Table 1 The relative contents of rhizosphere phenolic allelochemicals (PAs) in tobacco-planting soils with different continuous cropping years.

From: Mitigation of tobacco bacteria wilt with microbial degradation of phenolic allelochemicals

Rhizosphere PAs

Relative contents (%)

CCS0

CCS1

CCS2

CCS4

CCS10

DTBP

0.00 ± 0.00c

0.01 ± 0.007c

0.05 ± 0.014bc

0.14 ± 0.054a

0.16 ± 0.066a

DIBP

0.00 ± 0.00b

0.00 ± 0.00b

0.01 ± 0.006b

0.02 ± 0.011b

0.53 ± 0.135a

DIOP

0.02 ± 0.003b

0.05 ± 0.023b

0.03 ± 0.015b

0.06 ± 0.035b

0.24 ± 0.066a

DBP

0.03 ± 0.004c

0.11 ± 0.027bc

0.12 ± 0.03abc

0.17 ± 0.065ab

0.22 ± 0.068a

BA

0.01 ± 0.003b

0.05 ± 0.015ab

0.07 ± 0.035ab

0.14 ± 0.052a

0.12 ± 0.064a

POBA

0.002 ± 0.0007b

0.01 ± 0.003b

0.03 ± 0.015b

0.07 ± 0.023a

0.08 ± 0.032a

PTA

0.01 ± 0.004b

0.07 ± 0.026b

0.08 ± 0.021b

0.1 ± 0.035b

0.21 ± 0.076a

PHA

0.00 ± 0.00b

0.00 ± 0.00b

0.02 ± 0.008b

0.04 ± 0.019b

0.2 ± 0.065a

VA

0.08 ± 0.015c

0.23 ± 0.061bc

0.3 ± 0.106b

0.37 ± 0.102ab

0.52 ± 0.109a

VN

0.11 ± 0.031b

0.32 ± 0.083ab

0.28 ± 0.055ab

0.27 ± 0.05a

0.43 ± 0.144a

PHBA

0.00 ± 0.00b

0.00 ± 0.00b

0.05 ± 0.01ab

0.08 ± 0.02a

0.12 ± 0.037a

  1. *DTBP, 2,4-Di-tert-butylphenol; DIBP, diisobutyl phthalate; DIOP, diisooctyl phthalate; DBP, di-n-butyl phthalate; BA, benzoic acid; POBA, p-hydroxybenzaldehyde; PTA, terephthalic acid; PHA, phthalic acid; VA, vanillic acid; VN, vanillin; PHBA, p-hydroxybenzoic acid; CCS0, non-continuous cropping soils; CCS1, CCS2, CCS4 and CCS10, continuous cropping soils where only tobacco was planted for 1, 2, 4, and 10 years respectively. Different letters indicate significant difference (P < 0.05) according to Duncan’s multiple range test.
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