Effects of clipping and soil compaction on growth, morphology and mycorrhizal colonization of Schizachyrium scoparium, a C4 bunchgrass.

Abstract:

:A factorial design of clipping and compaction was used to study the responses of Schizachyrium scoparium and its mycorrhizal symbionts to these stresses. All treatment combinations significantly reduced the growth and biomass of plants relative to controls. Compaction significantly reduced tillering and crown expansion while clipping increased tillering early in the growing season and reduced it later. Mycorrhizal colonization of roots was highest in the clipped plots and lowest in compacted plots. Spore number was highest in compacted plots and lowest in clipped plots. It appears that spore number may be negatively correlated with root growth since any treatment that reduced plant growth yielded higher spore numbers. The combination of clipping and compaction reduced plant growth the most, but had intermediate effects on mycorrhizal colonization and spore number.

journal_name

Oecologia

journal_title

Oecologia

authors

Wallace LL

doi

10.1007/BF00377574

subject

Has Abstract

pub_date

1987-06-01 00:00:00

pages

423-428

issue

3

eissn

0029-8549

issn

1432-1939

pii

10.1007/BF00377574

journal_volume

72

pub_type

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