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Above- and below-ground interactions with agricultural management: Effects of soil microbial communities on barley and aphids

Williams, Alwyn LU ; Birkhofer, Klaus LU and Hedlund, Katarina LU (2014) In Pedobiologia 57(2). p.67-74
Abstract
Recent research has shown that agricultural management affects microbial biomass and community composition. We investigated the functional implications of such effects in terms of barley biomass production and nutrient acquisition, and whether changes in barley nutrient status affected aphid fecundity. Soils were collected from conventional, ley and organic arable fields and used as inocula in a glasshouse experiment. We determined microbial biomass and community composition using PLFA. We investigated barley growth and nutrient responses to the different soil inoculums, and the impact of excluding arbuscular mycorrhizal fungi (AMF). Aphids were applied to plants within clip cages and numbers of offspring counted. Microbial biomass and... (More)
Recent research has shown that agricultural management affects microbial biomass and community composition. We investigated the functional implications of such effects in terms of barley biomass production and nutrient acquisition, and whether changes in barley nutrient status affected aphid fecundity. Soils were collected from conventional, ley and organic arable fields and used as inocula in a glasshouse experiment. We determined microbial biomass and community composition using PLFA. We investigated barley growth and nutrient responses to the different soil inoculums, and the impact of excluding arbuscular mycorrhizal fungi (AMF). Aphids were applied to plants within clip cages and numbers of offspring counted. Microbial biomass and community composition were unaffected by agricultural management. The microbial communities altered root and shoot biomass and nutrient allocation, but had no effect on grain yield. Exclusion of AMF significantly increased shoot biomass but reduced grain yield. Aphid fecundity was not significantly affected by the microbial community or shoot nitrogen. We conclude that agricultural intensification does not necessarily have negative consequences for above- and below-ground interactions, and microbial communities from conventionally managed soils may offer equal benefit to crop productivity and nutrition as those from organically managed soils. (C) 2014 Elsevier GmbH. All rights reserved. (Less)
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author
organization
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type
Contribution to journal
publication status
published
subject
keywords
Above below ground linkages, Arbuscular mycorrhizal fungi, Aphid, fecundity, Biomass production, Nutrient acquisition, Soil microbial, community
in
Pedobiologia
volume
57
issue
2
pages
67 - 74
publisher
Elsevier
external identifiers
  • wos:000335107800002
  • scopus:84896549131
ISSN
1873-1511
DOI
10.1016/j.pedobi.2014.01.004
project
BECC
language
English
LU publication?
yes
id
4821bacc-9fef-4806-ad23-fc68381dd338 (old id 4496179)
date added to LUP
2014-06-23 12:30:48
date last changed
2017-04-30 11:16:20
@article{4821bacc-9fef-4806-ad23-fc68381dd338,
  abstract     = {Recent research has shown that agricultural management affects microbial biomass and community composition. We investigated the functional implications of such effects in terms of barley biomass production and nutrient acquisition, and whether changes in barley nutrient status affected aphid fecundity. Soils were collected from conventional, ley and organic arable fields and used as inocula in a glasshouse experiment. We determined microbial biomass and community composition using PLFA. We investigated barley growth and nutrient responses to the different soil inoculums, and the impact of excluding arbuscular mycorrhizal fungi (AMF). Aphids were applied to plants within clip cages and numbers of offspring counted. Microbial biomass and community composition were unaffected by agricultural management. The microbial communities altered root and shoot biomass and nutrient allocation, but had no effect on grain yield. Exclusion of AMF significantly increased shoot biomass but reduced grain yield. Aphid fecundity was not significantly affected by the microbial community or shoot nitrogen. We conclude that agricultural intensification does not necessarily have negative consequences for above- and below-ground interactions, and microbial communities from conventionally managed soils may offer equal benefit to crop productivity and nutrition as those from organically managed soils. (C) 2014 Elsevier GmbH. All rights reserved.},
  author       = {Williams, Alwyn and Birkhofer, Klaus and Hedlund, Katarina},
  issn         = {1873-1511},
  keyword      = {Above below ground linkages,Arbuscular mycorrhizal fungi,Aphid,fecundity,Biomass production,Nutrient acquisition,Soil microbial,community},
  language     = {eng},
  number       = {2},
  pages        = {67--74},
  publisher    = {Elsevier},
  series       = {Pedobiologia},
  title        = {Above- and below-ground interactions with agricultural management: Effects of soil microbial communities on barley and aphids},
  url          = {http://dx.doi.org/10.1016/j.pedobi.2014.01.004},
  volume       = {57},
  year         = {2014},
}