Two PVC rings (30cm diameter x 10cm tall) were installed in each plot, one in the plant row and one between plant rows. Gas samples were collected 0, 15, 30 and 45 min following chamber deployment. Ten milliliter chamber headspace gas samples were collected each time with polypropylene syringes.
Carbon_content
None
Mean_annual_temp. (longterm average)
None
Location
Ames, IA
N2O unit in the paper
kg N2O-N/ha
year
2006
Soil type_publication
Webser, Clarion, Nicollet
pH
None
Length of deployment
45.0
N2O_loss_I as value
None
Climate (Publ)
humid continental
Tillage comparisons
True
CEC
None
No of points used to calculate flux
8
DM crop yield
2563.0
sand
None
Remarks N2O
None
Country_ISO-3166
US
min. N form comparison
False
Field type
research
Publication No.
10.2134/jeq2005.0183
pre-crop
rye
Chamber size
0.071
Variation type
standard deviation
silt
None
Cumulative N2O
2.28
Country
USA
clay
None
pH [method used]
1:1 distilled water/soil slurries
Month of year
None
Mode_of_application
None
Bulk_density
None
year exp.
2003
Drainage
None
N rate / N response
False
N_rate
215.0
N2O in the paper
2.28
CO2-value
None
Remarks on the experiment (general)
None
Method_N2O
Nitrous oxide concentrations were determined with a gas chromatography instrument equipped with a 63Ni electron capture detector and a stainless steel column with Porapak Q. Samples were introduced into the gas chromatograph using an autosampler described by the change in N2O concentration with time, after accounting for diffusion effects by applying the algorithm developed by Hutchinson and Mosier (1981).
