Field measurement of nitrogen mineralization using soil core incubation and acetylene inhibition of nitrification

1990 ◽  
Vol 124 (1) ◽  
pp. 97-107 ◽  
Author(s):  
D. J. Hatch ◽  
S. C. Jarvis ◽  
Lois Philipps
Keyword(s):  
Nitrogen Mineralization ◽  
Field Measurement ◽  
Soil Core ◽  
Acetylene Inhibition ◽  
Core Incubation ◽  
Inhibition Of Nitrification

Refinements to an In-Situ Soil Core Technique for Measuring Net Nitrogen Mineralization in Moist, Fertilized Agricultural Soil

2002 ◽  
Vol 94 (4) ◽  
pp. 864 ◽  
Author(s):  
Kristofor R. Brye ◽  
John M. Norman ◽  
Erik V. Nordheim ◽  
S. Thompson Gower ◽  
Larry G. Bundy
Keyword(s):  
Nitrogen Mineralization ◽  
Agricultural Soil ◽  
Soil Core ◽  
Net Nitrogen Mineralization

Refinements to an In‐Situ Soil Core Technique for Measuring Net Nitrogen Mineralization in Moist, Fertilized Agricultural Soil

2002 ◽  
Vol 94 (4) ◽  
pp. 864-869 ◽  
Author(s):  
Kristofor R. Brye ◽  
John M. Norman ◽  
Erik V. Nordheim ◽  
S. Thompson Gower ◽  
Larry G. Bundy
Keyword(s):  
Nitrogen Mineralization ◽  
Agricultural Soil ◽  
Soil Core ◽  
Net Nitrogen Mineralization

Field measurement of net nitrogen mineralization of manured soil cropped to maize

2009 ◽  
Vol 46 (2) ◽  
pp. 179-184 ◽  
Author(s):  
Stefano Monaco ◽  
Dario Sacco ◽  
Teresa Borda ◽  
Carlo Grignani
Keyword(s):  
Nitrogen Mineralization ◽  
Field Measurement ◽  
Net Nitrogen Mineralization

ESTIMATING SOIL NET NITROGEN MINERALIZATION AS AFFECTED BY TILLAGE AND SOIL DRAINAGE DUE TO TOPOGRAPHIC POSITION

1987 ◽  
Vol 67 (3) ◽  
pp. 513-520 ◽  
Author(s):  
C. W. RICE ◽  
J. H. GROVE ◽  
M. S. SMITH
Keyword(s):  
Nitrogen Mineralization ◽  
Soil Core ◽  
No Tillage ◽  
Soil Drainage ◽  
Net Nitrogen Mineralization ◽  
Intact Core ◽  
Potentially Mineralizable N ◽  
Intact Soil Core ◽  
Poorly Drained Soils ◽  
Moldboard Plow

The influence of tillage on net nitrogen mineralization out of sod for two toposequences was estimated by several different methods. A field procedure utilizing small rain shelters to prevent leaching was employed to measure N mineralized in no-tillage (NT) and plowed (CT) treatments for six soils. Potentially mineralizable N and autoclavable N were also determined. An intact soil core procedure was developed to measure N mineralization. With the field procedure, mineralized N was generally greater in the well-drained soils but decreased with decreasing drainage. There was a highly significant interaction between soil type and tillage with greater amounts of N mineralized in the plowed well-drained soils but less in the poorly drained soils when compared to the corresponding no-tillage treatment. The standard laboratory estimates were able to predict differences between soils but did not predict the tillage effect. The development of a laboratory intact core procedure allowed for simulation of tillage effects and was correlated to the field estimates (r = 0.76). More importantly, the tillage ratios for mineralized N (NT:CT), which varied from 1.38 to 0.43, were reasonably correlated (r = 0.73) between the field and intact core procedures. Key words: Mineralized N methods, no-tillage, moldboard plow tillage, intact cores

Fate of nitrogen in slurries applied to land

1990 ◽  
Vol 1990 ◽  
pp. 42-42
Author(s):  
Brian F. Pain
Keyword(s):  
Nitrate Leaching ◽  
Management Practices ◽  
Wind Tunnels ◽  
Soil Core ◽  
Acetylene Inhibition ◽  
N Losses ◽  
Animal System ◽  
Fate Of Nitrogen ◽  
Waste Management Practices ◽  
Incubation Method

Much of the N ingested by livestock is excreted; slurries from housed animals therefore represent substantial pools of N. Recycling through the soil-piant-animal system can reduce fertilizer usage, but current waste management practices often result in water or atmospheric pollution. This may occur directly, for example through contamination of water by a leaking slurry store, or indirectly through losses of plant nutrients, especially N, to the wider environment. The adverse effects of gaseous losses, from NH3, volatilisation and denitrification, and of nitrate leaching are becoming increasingly well recognised. Such losses also reduce the amounts of N available for uptake by plants and may account for low, variable crop responses to applied slurries. The objectives of this study are to quantify losses of N following application of slurries to land and to examine strategies for reduction, so conserving N for uptake by plants.Following application of slurries to land, mainly grassland, N losses through NH3, volatilisation were measured by using small wind tunnels or micrometeorological techniques, through denitrification by a soil core incubation method with acetylene inhibition and through nitrate leaching in lysimeter experiments.

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