Publication: Growth and lead accumulation by the grasses vetiveria zizanioides and thysanolaena maxima in lead-contaminated soil amended with pig manure and fertilizer : a glasshouse study.
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Issued Date
2007
Resource Type
Language
eng
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Mahidol University
Rights Holder(s)
Elsevier
Bibliographic Citation
Chemosphere. Vol. 66, No. 1 (2007), 45-53
Suggested Citation
Rotkittikhun, P., Chaiyarat, R., Kruatrachue, M., Pokethitiyook, P., Baker, A.J.M. Growth and lead accumulation by the grasses vetiveria zizanioides and thysanolaena maxima in lead-contaminated soil amended with pig manure and fertilizer : a glasshouse study.. Chemosphere. Vol. 66, No. 1 (2007), 45-53. Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/9951
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Title
Growth and lead accumulation by the grasses vetiveria zizanioides and thysanolaena maxima in lead-contaminated soil amended with pig manure and fertilizer : a glasshouse study.
Other Contributor(s)
Abstract
Bo Ngam lead mine soils contain high concentrations of lead (up 1% total Pb)
and low amounts of organic matter and major nutrients (N, P, K). A glasshouse
study was conducted to compare growth performance, metal tolerance and
metal uptake by two grasses, Thysanolaena maxima (Roxb.) O. Kuntze and four
ecotypes of Vetiveria zizanioides (L.) Nash, syn. Chrysopogon zizanioides (L.)
Roberty (three from Thailand: Surat Thani, Songkhla and Kamphaeng Phet, and
one from Sri Lanka) and to study the effects of pig manure (20% and 40% w/w)
and inorganic fertilizer (75 and 150 mg kg-1) amendments to this lead mine
soil. The results showed that both T. maxima and V. zizanioides (Surat Thani
and Songkhla) could tolerate high Pb concentrations in soil (10 750 mg kg-1)
and had very good growth performance. Application of pig manure increased
electrical conductivity (EC) and reduced DTPA-extractable Pb concentration in
the soils. Pig manure application improved the growth of vetiver, especially at
20%, application dosage. Vetiver had the highest biomass. T. maxima could not
tolerate high EC values. The uptake by roots and transport of Pb to shoots of
both species was reduced when soils were amended with pig manure.
Application of inorganic fertilizer did not improve growth of vetiver but did
improve that of T. maxima. Fertilizer application did not have any great
influence on the Pb uptake in vetiver while T. maxima took up more Pb as a
result of the fertilizer enhancing its biomass yield. Both species transported low
Pb concentrations to shoots (8.3-179 mg kg-1) and accumulated higher
concentrations in roots (107-911 mg kg-1). In summary, both species may be
species well suited for phytostabilization in tropical lead mine areas.