Soil microbial biomass, C and N mineralization and enzyme activities in a hill pasture: Influence of season and slow-release P and S fertilizer

Ross, D. J.; Speir, T. W.; Kettles, H. A.; Mackay, A. D.

doi:10.1016/0038-0717(95)00069-q

Cited by 85 publications

(41 citation statements)

References 51 publications

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“…For phosphodiesterase, relatively high activities between 3.1 and 25.2 Amol pNP g À1 soil h À1 were reported from a New Zealand pasture soil during 3 years of repeated measurements (Ross et al, 1995), although much lower activities between 0.06 and 0.12 Amol pNP g À1 soil h À1 were detected during a seasonal cycle in another New Zealand grassland soil (Chen et al, 2003). Corresponding phosphomonoesterase activities in the latter study ranged between 2.0 and 4.3 Amol pNP g À1 soil h À1 .…”

Section: Discussionmentioning

confidence: 98%

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Turner¹,

Haygarth²

2005

Science of The Total Environment

186

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Section: Discussionmentioning

confidence: 98%

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Turner¹,

Haygarth²

2005

Science of The Total Environment

186

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“…Microbial biomass C and N, and composition Microbial C and N were measured on the moist soils within 3 days, by using the fumigationextraction procedure with soil adjusted to 60% water-holding capacity, according to Ross et al (1995Ross et al ( , 2004. The k-factors used for converting extractable C and N flush to microbial C and N were, respectively, 0.41 (Sparling et al 2000) and 0.45 (Jenkinson 1988).…”

Section: Plant and Soil Chemical Analysesmentioning

confidence: 99%

Effect of nitrogen fertilizer on nitrogen pools and soil communities under grazed pastures

Parfitt

Couper

Parkinson

et al. 2012

New Zealand Journal of Agricultural Research

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“…The titration was made by automatic titrimeter with hydrochloric acid (HCl 0.25N) (Ross et al 1995). Mineralized N was extracted with a 2 M KCl solution (soil-solution ratio of 1:4) and measured using a Technicon Autoanalyzer.…”

Section: Incubation Methodsmentioning

confidence: 99%

Evaluation of carbon and nitrogen mineralization rates in meadow soils from dairy farms under transit to biological cropping systems

Sibih¹,

N’Dayegamiye²,

Karam³

2003

Can. J. Soil. Sci.

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Sbih, M., N'Dayegamiye, A. and Karam, A. 2003. Evaluation of carbon and nitrogen mineralization rates in meadow soils from dairy farms under transit to biological cropping systems. Can. J. Soil Sci. 83: 25-33. Mineralized soil N from meadow soils will become an important source of N to following crops in low-input biological cropping systems. The C and N mineralization rates of soils from 34 sites situated on dairy farms recently converted to biological cropping systems were evaluated in a 56-wk incubation at 25°C. Data on C and N mineralization were fitted to first-order kinetic models. Carbon and N generally presented similar patterns of mineralization. Total mineralized N (N m ) ranged between 88 and 235 mg N kg -1 soil, which represented 6.6 to 22% of total N. Carbon mineralization (C m ) rate was between 11 and 17 times greater than N mineralization (1523-2638 mg C kg -1 soil ) and C mineralized represented 9 to 19% of soil organic C. The rate constant was between 0.05 and 0.123 wk -1 for C (k C ) and ranged from 0.032 to 0.088 wk -1 for N (k N ). The half-life for C (T C 0) and for N (T N 0) varied, respectively, between 5.6 and 13.3 wk and between 15 and 28 wk. Results show that about 80% of total mineralized C and N were mineralized during the first 25 wk of incubation, corresponding to the mineralizable fraction of soil organic matter (OM). Data on C and N mineralization have been adjusted using a bicompartmental model (active and recalcitrant pools), which corresponded, respectively, to first-order and exponential equations. Total mineralizable C and N (C m and N m ), and the C and N rate constants (k C and k N ) were strongly related, whereas the rate constants of the recalcitrant pools (h c and h N ) were negatively related to these parameters. This suggests that C and N mineralizable pools were independent of the humified stable OM (recalcitrant pool). Carbon and N mineralization parameters were positively related to the soil clay and silt contents, but inversely to the sand levels. This study indicates that when ploughed, meadow soils contain large mineralizable N pools, which could sustain following crops with N nutrition in low-input biological cropping systems.

show abstract

Soil microbial biomass, C and N mineralization and enzyme activities in a hill pasture: Influence of season and slow-release P and S fertilizer

Cited by 85 publications

References 51 publications

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Phosphatase activity in temperate pasture soils: Potential regulation of labile organic phosphorus turnover by phosphodiesterase activity

Effect of nitrogen fertilizer on nitrogen pools and soil communities under grazed pastures

Evaluation of carbon and nitrogen mineralization rates in meadow soils from dairy farms under transit to biological cropping systems

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