Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Liming and nitrogen fertilization affects phosphatase activities, microbial biomass and mycorrhizal colonisation in upland grassland
AU - Johnson, D
AU - Leake, JR
AU - Read, DJ
PY - 2005/4/30
Y1 - 2005/4/30
N2 - We have studied the effects of factorial combinations of lime and N additions on soil microbial biomass, respiration rates and phosphatase activity of an upland grassland. We also used an Agrostis capillaris seedling bioassay to assess the effect of the treatments on the activity of arbuscular-mycorrhizal (AM) fungi and root surface phosphatase enzymes and the concentrations of N and P in the bioassay plant shoots. In the F and H horizons, soil microbial biomass carbon (C mic ) decreased in response to the liming, while addition of lime and N together reduced basal respiration rates. In the Ah horizon, C mic was unaffected by the treatments but basal respiration rates decreased in the plots receiving nitrogen. Soil phosphatase activity decreased only in the Ah horizon in plots receiving lime, either in combination with N or alone. The mass of root fwt. colonized by AM fungi increased in response to the treatments in the order nitrogen
AB - We have studied the effects of factorial combinations of lime and N additions on soil microbial biomass, respiration rates and phosphatase activity of an upland grassland. We also used an Agrostis capillaris seedling bioassay to assess the effect of the treatments on the activity of arbuscular-mycorrhizal (AM) fungi and root surface phosphatase enzymes and the concentrations of N and P in the bioassay plant shoots. In the F and H horizons, soil microbial biomass carbon (C mic ) decreased in response to the liming, while addition of lime and N together reduced basal respiration rates. In the Ah horizon, C mic was unaffected by the treatments but basal respiration rates decreased in the plots receiving nitrogen. Soil phosphatase activity decreased only in the Ah horizon in plots receiving lime, either in combination with N or alone. The mass of root fwt. colonized by AM fungi increased in response to the treatments in the order nitrogen
KW - arbuscular-mycorrhiza
KW - improved grassland
KW - microbial biomass
KW - phosphatase
U2 - 10.1007/s11104-004-2267-z
DO - 10.1007/s11104-004-2267-z
M3 - Journal article
VL - 271
SP - 157
EP - 164
JO - Plant and Soil
JF - Plant and Soil
SN - 0032-079X
IS - 1-2
ER -