scholarly journals A model of nitrous oxide evolution from soil driven by rainfall events: 2. Model applications

1992 ◽  
Vol 97 (D9) ◽  
pp. 9777-9783 ◽  
Author(s):  
Changsheng Li ◽  
Steve Frolking ◽  
Tod A. Frolking
Keyword(s):  
Nitrous Oxide ◽  
Rainfall Events ◽  
Nitrous Oxide Evolution

Nitrous Oxide Evolution from Irrigated Land

1980 ◽  
Vol 9 (3) ◽  
pp. 387-393 ◽  
Author(s):  
J. C. Ryden ◽  
L. J. Lund
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Evolution

DENITRIFICATION IN LOWBUSH BLUEBERRY SOILS

1989 ◽  
Vol 69 (2) ◽  
pp. 303-312 ◽  
Author(s):  
LEONARD J. EATON ◽  
DAVID G. PATRIQUIN
Keyword(s):  
Nitrous Oxide ◽  
Organic Matter ◽  
Environmental Variables ◽  
Nitrate Concentration ◽  
Vaccinium Angustifolium ◽  
Lowbush Blueberry ◽  
Key Words Nitrous Oxide ◽  
A Site ◽  
Infertile Soils ◽  
Nitrous Oxide Evolution

Effects of environmental variables on denitrification in acid (pH 4.0–5.5), infertile soils of lowbush blueberry (Vaccinium angustifolium Ait.) stands were investigated under laboratory conditions. All soils produced N2O when nitrate was added and samples were waterlogged and incubated for 2 d at temperatures of 20 °C or greater. No N2O production occurred at temperatures of 15 °C or lower. Nitrous oxide was the main gas evolved at the natural pH levels of these soils. Mercuric chloride inhibited nitrous oxide evolution. Raising soil pH resulted in increased rates of denitrification, and in more conversion of nitrous oxide to dinitrogen. Soil taken from a site that had been fertilized repeatedly exhibited higher rates of N2O evolution than did soil from a site that had never been fertilized. N2O production from waterlogged samples without added nitrate was positively correlated with percent organic matter and nitrate concentration of soils at the time of sampling. In a field experiment, more N2O was produced by samples from fertilized plots than by those from unfertilized plots, but absolute values from both types of plots were low. Key words: Nitrous oxide, pH, nitrate, moisture

NITROUS OXIDE EVOLUTION RATES FROM FERTILIZED SOIL: EFFECTS OF APPLIED NITROGEN

1980 ◽  
Vol 60 (3) ◽  
pp. 429-438 ◽  
Author(s):  
D. J. McKENNEY ◽  
K. F. SHUTTLEWORTH ◽  
W. I. FINDLAY
Keyword(s):  
Nitrous Oxide ◽  
Agricultural Soil ◽  
Sandy Loam ◽  
Potassium Nitrate ◽  
Fertilized Soil ◽  
Extreme Variability ◽  
Soil Effects ◽  
Nitrous Oxide Evolution ◽  
Long Term Studies

Nitrous oxide emission from agricultural soil has been measured in two relatively long-term studies over two different soil types, Brookston clay and Fox sandy loam, located at Woodslee and Harrow Ontario, respectively. The clay plots treated with various amounts (0–366 kg N∙ha−1) of ammonium nitrate, potassium nitrate, or urea were routinely monitored for periods up to 1 yr. Extreme variability in rates within the range 109–1013 molecules∙cm−2∙s−1 was observed (1 × 109 molecules∙cm−2∙s−1 = 4.02 = 10−4 kg N∙ha−1∙day−1 = 1.68 μg N∙m−2∙h−1). Over sandy loam, rates which were lower and more uniform (108–1011 molecules∙cm−2∙s−1) showed a strong correlation with amount of NH4NO3 applied. About 0.25% of applied fertilizer was released as N2O within 80 days following treatment.

Comparing nitrous oxide losses from three residential landscapes under different management schemes following natural rainfall events

2015 ◽  
Vol 18 (4) ◽  
pp. 1227-1243 ◽  
Author(s):  
Porché L. Spence ◽  
John T. Walker ◽  
Wayne P. Robarge ◽  
Bill Preston ◽  
Deanna L. Osmond
Keyword(s):  
Nitrous Oxide ◽  
Rainfall Events ◽  
Residential Landscapes ◽  
Natural Rainfall ◽  
Management Schemes

Nitric and Nitrous Oxide Evolution from Managed Subtropical Grassland

1993 ◽  
pp. 290-316 ◽  
Author(s):  
G. L. Hutchinson ◽  
G. P. Livingston ◽  
E. A. Brams
Keyword(s):  
Nitrous Oxide ◽  
Nitrous Oxide Evolution
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