Journal article
Effect of cattle faeces with different microbial biomass content on soil properties, gaseous emissions and plant growth



Publication Details
Authors:
Jost, D.; Jörgensen, R.; Sundrum, A.
Publisher:
Springer Science Business Media
Publication year:
2013
Journal:
Biology and Fertility of Soils
Pages range:
61-70
Volume number:
49
ISSN:
0178-2762

Abstract

A study was carried out to investigate the effects


of different diets for heifers, low- and high-yielding cows on


the microbial composition of their faeces and subsequently


the impacts of these faeces on CO


2


and N


2


O emissions, N


mineralisation and plant N uptake. A diet low in N and high


in acid detergent fibre offered to heifers resulted in faeces


dominated by fungi. These faeces were characterised by a


low content in microbial biomass C and N and a high


ergosterol concentration in comparison to the faeces of


high-yielding cows. Added to soil, faeces of heifers led to


lower emission and stronger N immobilisation during a 14-


day incubation in comparison to the faeces of high-yielding


cows. Total N


2


O emission was significantly (


P


<0.05) cor-


related with faecal microbial biomass N. Rye grass yield and


N uptake were lowest in the soil supplemented with faeces


from heifers in a 62-day pot experiment. Plant N uptake was


influenced by the faecal microbial biomass C/N ratio and the


fungal C to bacterial C ratio. In conclusion, the faecal


microbial biomass was affected to a high degree by the


feeding regime and faecal microbial characteristics revealed


higher impacts on plant N uptake than soil microbial


properties.


Last updated on 2019-25-07 at 13:34

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