Denitrification activity in the vadose zone beneath a sludge-amended semi-arid soil

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Soil cores were collected to a depth of 14 m from a Southwest semi-arid soil amended with either anaerobically digested sludge or inorganic fertilizer. Twenty sections partitioned from each core were characterized for their physical and chemical properties. Denitrification potential was estimated in each core section in the laboratory using the acetylene reduction method. The sludge-amended soil had significantly higher denitrification rates within and below the root zone than the fertilizer-amended soil. Additionally, significant correlation values were obtained in both cores between denitrification rates and particle size distribution, moisture, and total organic carbon (C). Sludge applications in semi-desert soils may add much needed organic C in the soil profile. This additional soluble organic C may help control nitrate (NO3) ground water pollution by providing substrate C for denitrifying bacteria below the root zone.

Original languageEnglish (US)
Pages (from-to)797-8122
Number of pages7326
JournalCommunications in Soil Science and Plant Analysis
Volume28
Issue number9-10
StatePublished - 1997

Fingerprint

semiarid soils
Denitrification
vadose zone
sludge
denitrification
Soils
rhizosphere
denitrifying bacteria
desert soils
soil
acetylene reduction
groundwater contamination
Fertilizers
particle size distribution
mineral fertilizers
desert soil
soil profiles
groundwater pollution
physical properties
physicochemical properties

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science
  • Soil Science
  • Analytical Chemistry

Cite this

Denitrification activity in the vadose zone beneath a sludge-amended semi-arid soil. / Artiola, Janick F.

In: Communications in Soil Science and Plant Analysis, Vol. 28, No. 9-10, 1997, p. 797-8122.

Research output: Contribution to journalArticle

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