Effects of anhydrous ammonia fertilization on emission of nitrous oxide from soils
A simple method was developed for accurate injection of anhydrous ammonia in field studies to assess the effects of this fertilizer on emissions of nitrous oxide (NO/sub 2/) from soils. Use of this method and of a chamber technique for measurement of N/sub 2/O emissions showed that fertilization of three Iowa soils with anhydrous ammonia (250 kg n/ha) led to a very marked increase in emission of N/sub 2/O. Emissions of N/sub 2/O-n from the fertilized soils in 139 days ranged from 12.1 to 19.6 kg/ha and averaged 15.6 kg/ha. The corresponding emissions from the unfertilized soils ranged from 1.7 to 2.5 kg/ha and averaged 2.0 kg/ha. Most of the N/sub 2/O evolved from the fertilized soils was produced within 42 days after fertilization, and N/sub 2/O emissions from these soils within 42 days after fertilization, and N/sub 2/O emissions from these soils 96 days after fertilization were not appreciably greater than those from the corresponding unfertilized soils. The fertilizer-induced emissions of N/sub 2/O-n observed after application of anhydrous ammonia greatly exceeded those detected in similar field studies using other N fertilizers and represented 4.0 to 6.8% of the fertilizer N applied.
- OSTI ID:
- 5750512
- Journal Information:
- J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 10:1; ISSN JEVQA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
AMMONIA
CHALCOGENIDES
CHEMISTRY
ECOLOGICAL CONCENTRATION
FEDERAL REGION VII
FERTILIZERS
HYDRIDES
HYDROGEN COMPOUNDS
IOWA
NITROGEN COMPOUNDS
NITROGEN FIXATION
NITROGEN HYDRIDES
NITROGEN OXIDES
NITROUS OXIDE
NORTH AMERICA
OXIDES
OXYGEN COMPOUNDS
POLLUTION
SOIL CHEMISTRY
SOILS
USA