Vesicular-arbuscular mycorrhizae in taconite tailings. II. Effects of reclamation practices

Nancy Johnson, Anne Cressey McGraw

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A factorial field experiment was conducted to study the effects of two reclamation treatments (papermill sludge amendment and straw mulch) on populations of spores of mycorrhizal fungi and the percentage of plant root length colonized by mycorrhizal fungi. Unreclaimed taconite tailings were found to be essentially devoid of propagules of mycorrhizal fungi, but mycorrhizae developed rapidly following reclamation. Extremely high spore densities and levels of root colonization were observed in less than two growing seasons. Spore population densities in reclaimed taconite tailings were frequently 100-fold greater than those observed by other researchers in natural, undisturbed soils. Papermill sludge and straw mulch significantly affected sporulation of mycorrhizal fungi. Tailings amended with papermill sludge also supported significantly greater plant biomass than did unamended tailings; providing a plausible explanation for increased sporulation. In contrast, tailings treated with straw mulch contained significantly fewer spores than did unmulched tailings. Suppression of sporulation of mycorrhizal fungi may have been caused by antagonistic soil organisms introduced with the straw to the taconite tailings.

Original languageEnglish (US)
Pages (from-to)143-152
Number of pages10
JournalAgriculture, Ecosystems and Environment
Volume21
Issue number3-4
DOIs
StatePublished - 1988
Externally publishedYes

Fingerprint

vesicular-arbuscular mycorrhiza
vesicular arbuscular mycorrhizae
tailings
mycorrhizal fungi
straw
spores
sporulation
sludge
fungus
spore
mulch
mycorrhizae
root colonization
mycorrhiza
population density
researchers
growing season
effect
fold
soil

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Environmental Science(all)
  • Earth and Planetary Sciences(all)

Cite this

Vesicular-arbuscular mycorrhizae in taconite tailings. II. Effects of reclamation practices. / Johnson, Nancy; McGraw, Anne Cressey.

In: Agriculture, Ecosystems and Environment, Vol. 21, No. 3-4, 1988, p. 143-152.

Research output: Contribution to journalArticle

@article{504bf60e56fa42989a506c4a06abd231,
title = "Vesicular-arbuscular mycorrhizae in taconite tailings. II. Effects of reclamation practices",
abstract = "A factorial field experiment was conducted to study the effects of two reclamation treatments (papermill sludge amendment and straw mulch) on populations of spores of mycorrhizal fungi and the percentage of plant root length colonized by mycorrhizal fungi. Unreclaimed taconite tailings were found to be essentially devoid of propagules of mycorrhizal fungi, but mycorrhizae developed rapidly following reclamation. Extremely high spore densities and levels of root colonization were observed in less than two growing seasons. Spore population densities in reclaimed taconite tailings were frequently 100-fold greater than those observed by other researchers in natural, undisturbed soils. Papermill sludge and straw mulch significantly affected sporulation of mycorrhizal fungi. Tailings amended with papermill sludge also supported significantly greater plant biomass than did unamended tailings; providing a plausible explanation for increased sporulation. In contrast, tailings treated with straw mulch contained significantly fewer spores than did unmulched tailings. Suppression of sporulation of mycorrhizal fungi may have been caused by antagonistic soil organisms introduced with the straw to the taconite tailings.",
author = "Nancy Johnson and McGraw, {Anne Cressey}",
year = "1988",
doi = "10.1016/0167-8809(88)90083-7",
language = "English (US)",
volume = "21",
pages = "143--152",
journal = "Agriculture, Ecosystems and Environment",
issn = "0167-8809",
publisher = "Elsevier",
number = "3-4",

}

TY - JOUR

T1 - Vesicular-arbuscular mycorrhizae in taconite tailings. II. Effects of reclamation practices

AU - Johnson, Nancy

AU - McGraw, Anne Cressey

PY - 1988

Y1 - 1988

N2 - A factorial field experiment was conducted to study the effects of two reclamation treatments (papermill sludge amendment and straw mulch) on populations of spores of mycorrhizal fungi and the percentage of plant root length colonized by mycorrhizal fungi. Unreclaimed taconite tailings were found to be essentially devoid of propagules of mycorrhizal fungi, but mycorrhizae developed rapidly following reclamation. Extremely high spore densities and levels of root colonization were observed in less than two growing seasons. Spore population densities in reclaimed taconite tailings were frequently 100-fold greater than those observed by other researchers in natural, undisturbed soils. Papermill sludge and straw mulch significantly affected sporulation of mycorrhizal fungi. Tailings amended with papermill sludge also supported significantly greater plant biomass than did unamended tailings; providing a plausible explanation for increased sporulation. In contrast, tailings treated with straw mulch contained significantly fewer spores than did unmulched tailings. Suppression of sporulation of mycorrhizal fungi may have been caused by antagonistic soil organisms introduced with the straw to the taconite tailings.

AB - A factorial field experiment was conducted to study the effects of two reclamation treatments (papermill sludge amendment and straw mulch) on populations of spores of mycorrhizal fungi and the percentage of plant root length colonized by mycorrhizal fungi. Unreclaimed taconite tailings were found to be essentially devoid of propagules of mycorrhizal fungi, but mycorrhizae developed rapidly following reclamation. Extremely high spore densities and levels of root colonization were observed in less than two growing seasons. Spore population densities in reclaimed taconite tailings were frequently 100-fold greater than those observed by other researchers in natural, undisturbed soils. Papermill sludge and straw mulch significantly affected sporulation of mycorrhizal fungi. Tailings amended with papermill sludge also supported significantly greater plant biomass than did unamended tailings; providing a plausible explanation for increased sporulation. In contrast, tailings treated with straw mulch contained significantly fewer spores than did unmulched tailings. Suppression of sporulation of mycorrhizal fungi may have been caused by antagonistic soil organisms introduced with the straw to the taconite tailings.

UR - http://www.scopus.com/inward/record.url?scp=0024229244&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024229244&partnerID=8YFLogxK

U2 - 10.1016/0167-8809(88)90083-7

DO - 10.1016/0167-8809(88)90083-7

M3 - Article

VL - 21

SP - 143

EP - 152

JO - Agriculture, Ecosystems and Environment

JF - Agriculture, Ecosystems and Environment

SN - 0167-8809

IS - 3-4

ER -