Phenolic compounds in conducive and suppressive soils on clubroot disease of crucifers

C. C. Young, K. T. Cheng, G. R. Waller

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Three conducive and three suppresive soils were examined for differences in physical and chemical properties, as well as qualitative and quantitative content of phenolic compounds. The three suppressive soils were slightly alkaline, whereas the three conducive soils were slightly acid. The concentrations of Ca and Mg in suppressive soils were 3-15 times those in conducive soils. The total concentrations of phenolics and humic acids in conducive soils were 2-4 and 2-10 times those in suppressive soils, respectively, whereas the concentrations of gentisic (2,5-dihydroxybenzoic) acid in suppressive soils was higher than that in conducive soils. In bioassay, the radicle growth of Brassica pekinensis was inhibited more by extracts from the conducive soils than those from the suppressive soils. Clubroot disease was significantly suppressed by gentisic acid applied to conducive soil at the rate of 800 mg kg-1. When seeds were soaked in of gentisic acid solution (800 mg kg-1, pH 5.5) 24 h before planting, the incidence of the disease dropped from 78 to 41%.

Original languageEnglish
Pages (from-to)1183-1189
Number of pages7
JournalSoil Biology and Biochemistry
Volume23
Issue number12
DOIs
Publication statusPublished - 1991
Externally publishedYes

Fingerprint

suppressive soils
phenolic compound
Brassicaceae
phenolic compounds
Soil
2,5-dihydroxybenzoic acid
Soils
soil
acid soils
Brassica rapa subsp. pekinensis
root radicle
acid
humic acids
phenolic acids
disease incidence
clubroot
physical properties
physicochemical properties
bioassays
planting

ASJC Scopus subject areas

  • Soil Science
  • Biochemistry
  • Ecology
  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Phenolic compounds in conducive and suppressive soils on clubroot disease of crucifers. / Young, C. C.; Cheng, K. T.; Waller, G. R.

In: Soil Biology and Biochemistry, Vol. 23, No. 12, 1991, p. 1183-1189.

Research output: Contribution to journalArticle

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