Gaseous nitrogen losses from fertilized soil during nitrification and denitrification using the acetylene blockage technique

1986 ◽  
Vol 2 (2) ◽  
Author(s):  
S. Casella ◽  
C. Leporini ◽  
G. Picci
Keyword(s):  
Nitrogen Losses ◽  
Gaseous Nitrogen ◽  
Fertilized Soil ◽  
Acetylene Blockage Technique ◽  
Nitrification And Denitrification ◽  
Acetylene Blockage

Nitrification and denitrification as sources of gaseous nitrogen emission from different forest soils in Changbai Mountain

2000 ◽  
Vol 11 (3) ◽  
pp. 177-182 ◽  
Author(s):  
Xu Hui ◽  
Chen Guan-xiong ◽  
Li A-na ◽  
Han Shi-jie ◽  
Huang Guo-hong
Keyword(s):  
Forest Soils ◽  
Changbai Mountain ◽  
Gaseous Nitrogen ◽  
Nitrogen Emission ◽  
Nitrification And Denitrification

SEASONAL PATTERNS OF DENITRIFICATION AND LEAF NITRATE REDUCTASE ACTIVITY IN A CORN FIELD

1978 ◽  
Vol 58 (2) ◽  
pp. 283-285 ◽  
Author(s):  
D. G. PATRIQUIN ◽  
J. C. MacKINNON ◽  
K. I. WILKIE
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
General Trend ◽  
Reductase Activity ◽  
Seasonal Patterns ◽  
Assay Procedure ◽  
Acetylene Blockage Technique ◽  
Acetylene Blockage ◽  
Leaf Nitrate

Denitrification in soil around the bases of corn stalks, determined by the "acetylene blockage technique," exhibited a general trend of decline from June to September. Leaf nitrate reductase activity, determined by an in vivo assay procedure, was low in June and July, and then exhibited a pronounced maximum at the time of tasselling.

Gaseous nitrogen losses from plants

1983 ◽  
pp. 159-180 ◽  
Author(s):  
G. D. Farquhar ◽  
R. Wetselaar ◽  
B. Weir
Keyword(s):  
Nitrogen Losses ◽  
Gaseous Nitrogen

Estimating Non-Gaseous Nitrogen Losses from Established Turf

1994 ◽  
Vol 1 (1) ◽  
pp. 17-30 ◽  
Author(s):  
E. S. Hesketh ◽  
R. J. Hull ◽  
A. J. Gold
Keyword(s):  
Nitrogen Losses ◽  
Gaseous Nitrogen

Gaseous nitrogen losses from a grassland area used for overwintering cattle

2006 ◽  
Vol 1293 ◽  
pp. 343-346
Author(s):  
M. Šimek ◽  
R.J. Stevens ◽  
R.J. Laughlin ◽  
J. Hynšt ◽  
P. Brůček ◽  
...  
Keyword(s):  
Nitrogen Losses ◽  
Gaseous Nitrogen

Denitrification and nitrate leaching during the fall and winter following dairy cattle slurry application

1997 ◽  
Vol 77 (2) ◽  
pp. 231-240 ◽  
Author(s):  
J. W. Paul ◽  
B. J. Zebarth
Keyword(s):  
Dairy Cattle ◽  
Soil Profile ◽  
High Water ◽  
High Rate ◽  
Cattle Slurry ◽  
Manure Application ◽  
Total N ◽  
Acetylene Blockage Technique ◽  
Acetylene Blockage ◽  
Dairy Cattle Slurry

Conditions in soils of south-coastal British Columbia during the fall and winter favor both NO3− leaching and denitrification. Estimates of NO3− leaching were made on a coarse-textured soil having a high water table (Sumas) and a well-drained, medium-textured soil (Agassiz) in each of 1991 and 1992, following application of 0, 300 and 600 kg total N ha−1 as dairy cattle slurry at the end of September. Leaching was calculated by measuring NH4+ and NO3− concentrations biweekly to 90 cm depth and subtracting denitrification losses. Denitrification estimates were made using the acetylene blockage technique on intact cores taken to 43 cm depth at biweekly intervals from the 0 and 600 kg N ha−1 treatments. Most of the NO3− disappeared from the 90 cm soil profile by January in both years. At the high rate of manure application, denitrification losses were 29 and 20 kg N ha−1 at Agassiz in 1991 and 1992, and 48 and 17 kg N ha−1 at Sumas in 1991 and 1992, respectively. Denitrification losses in the non-manured treatments ranged from 3 to 16 kg N ha−1 Significant denitrification losses occurred at the 15- to 28-cm and the 30-cm to 43-cm depths, indicating that denitrification measurements at these depths are important. Leaching losses ranged from 60 to 188 kg N ha−1 from the control treatments, and from 102 to 241 kg N ha−1 following the highrate of manure application. Denitrification accounted for up to 17% of the NO3− loss from the soil profile, indicating that the majority of the NO3− was leached. Key words: Acetylene blockage technique, denitrification rate, air-filled porosity, manure

Control of gaseous nitrogen losses from urea applied to flooded rice soils

1988 ◽  
Vol 18 (1) ◽  
pp. 31-47 ◽  
Author(s):  
J. R. Simpson ◽  
W. A. Muirhead ◽  
K. H. Bowmer ◽  
G. X. Cai ◽  
J. R. Freney
Keyword(s):  
Nitrogen Losses ◽  
Gaseous Nitrogen ◽  
Rice Soils ◽  
Flooded Rice
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