Progress in Nitrogen Cycling Studies: Proceedings of the 8th Nitrogen Workshop held at the University of Ghent, 5–8 September, 1994

Front Matter....Pages i-xiii
Future trends in nitrogen research....Pages 1-10
Front Matter....Pages 11-11
Immobilization of labelled inorganic N and mineralization of applied organic N as reflected in electro-ultrafiltration and CaCl 2 soil extracts....Pages 13-16
Nitrogen mineralization kinetics in sewage water irrigated and heavy metal treated sandy soils....Pages 17-22
Relationship between the fixed ammonium and the mineralization of the organic nitrogen in soil....Pages 23-26
Nitrogen turnover in alternatives to peat....Pages 27-30
Nitrogen dynamics on a soil with different tillage systems....Pages 31-35
N mineralization in undisturbed soil....Pages 37-40
Temperature effects on C- and N-mineralization from vegetable crop residues....Pages 41-46
The dissemination of Pseudomonas fluorescens ANP15, a plant-growth-stimulating microorganism, by Lumbricus terrestris in soil....Pages 47-51
Estimating gross mineralisation of Alnus glutinosa residues, using 15 N mirror image experimentation....Pages 53-56
D- and L-amino acid metabolism in soil....Pages 57-61
‘Light’ fraction mineralization potentials of humid tropical soils....Pages 63-67
Nitrogen mineralization in relation to C:N ratio and decomposability of organic materials....Pages 69-75
Effect of wetting and drying cycles on N mineralization/immobilization in soil amended with organic materials....Pages 77-83
Interactions between decomposition of plant residues and nitrogen cycling in soil....Pages 85-96
Turnover of organic nitrogen in soils and its availability to crops....Pages 97-107
Effect of plant residues on ammonium and nitrate content of soils during incubation....Pages 109-114
N turnover in soils with different mineralization potential after application of N fertilizer....Pages 115-120
Nitrogen tranformation during the composting of different organic wastes....Pages 121-125
Decomposition of oil palm empty fruit bunches in the field and mineralization of nitrogen....Pages 127-132
Front Matter....Pages 11-11
The effectiveness of the Rutgers system and the addition of bulking agent in reducing N-losses during composting....Pages 133-139
Short-term anaerobic storage of 15 N-labelled sheep urine does not influence the mineralization of nitrogen in soil....Pages 141-145
Monitoring of N-uptake by green manures and of the influence of N-release on N-availability, production and quality of sugar beet....Pages 147-151
Soil litter dynamics and N cycling in alley cropping systems....Pages 153-157
The production of volatile organic compounds during nitrogen transformations in soils....Pages 159-163
Effect of zinc on nitrogen transformation during composting process and in soil....Pages 165-169
Front Matter....Pages 171-171
Effects of environmental factors and Mn, Zn, Cu trace elements on the available N content of two soils....Pages 173-177
Maize supplementation for grazing cows on the N content of milk, faeces and grass....Pages 179-182
Residual effects of poultry manure and fertiliser nitrogen applications....Pages 183-190
Effect of herbicides on the urea transformation in soil....Pages 191-194
Fate of nitrogen applied to grasses and its influence on forage quality....Pages 195-197
 15 N Characterisation of immobilisation of fertiliser N in blanket peat under improved grass pasture....Pages 199-202
Nitrogen uptake by cover crops at 7 sites in the UK: 1990–1993....Pages 203-205
 15 N manipulations in a forest ecosystem subjected to an experimental decrease in nitrogen deposition....Pages 207-212
Maize nitrogen fertilization in fluvisols of the Lower Mondego Valley — field trials....Pages 213-215
Nitrogen uptake by Brachiaria spp. and its effects on soil mineral N transformations....Pages 217-222
Effect of weather conditions and time of N application on the uptake of soil and applied N by winter wheat....Pages 223-229
Nitrogen nutrition of tomato derived from the use of sewage sludge and almonds residue as fertilizers....Pages 231-235
Front Matter....Pages 237-242
Recovery of green manure N by succeeding sugar beet....Pages 243-246
Efficiency of fertilizer use by a rain-fed wheat crop following split-application of fertilizer nitrogen....Pages 171-171
Prediction of nitrogen fertilizer requirement with the HRI WELL-N computer model....Pages 247-250
Formation of nitrate pool in spinach grown on different soils (with 15 N)....Pages 251-254
Testing of different ways of N-fertilizer application for decreasing the nitrate content in some vegetable crops....Pages 255-258
Impact of soil pH on nitrogen mineralization in grassland soils....Pages 259-264
Regulation of nitrogen uptake on the whole plant level....Pages 265-270
Plant response and environmental aspects as affected by rate and pattern of nitrogen release from controlled release N fertilizers....Pages 271-276
The fate of inorganic N additions to an ombrotrophic bog....Pages 277-283
Field measured net N mineralization pattern in an alluvial Chernozem soil in the Szigetkoz Region of Hungary....Pages 285-291
Sustainability of nitrogen use in two dryland farming systems....Pages 293-297
Front Matter....Pages 299-302
Field symbiotic fixation using 15 N : II. Vicia faba L. and Pisum sativum L.....Pages 303-306
Nitrogen fixation, nitrification and denitrification in ombrotrophic bog....Pages 307-307
Field measurement of N 2 fixation by Gliricidia sepium ....Pages 309-313
Front Matter....Pages 315-319
Advisory systems for nitrogen fertilizer recommendations....Pages 321-326
Nitrogen inputs and losses from New Zealand dairy farmlets, as affected by nitrogen fertilizer application: year one....Pages 327-327
Nitrogen balance studies in a long-term crop rotation field experiment....Pages 329-336
Nutrient management in integrated nursery stock production....Pages 337-341
Optimization of a nitrogen advice system: Target values as a function of N-mineralization rates....Pages 343-346
Potential nitrogen availability and fertiliser recommendations....Pages 347-351
Front Matter....Pages 353-358
Nitrogen balances of ecosystems, landscapes, and watersheds....Pages 359-363
Nitrogen balance on national, regional and farm level in Poland....Pages 327-327
N-balances on Flemish dairy farms....Pages 365-369
System of Adjusted Nitrogen Supply (SANS) for fertilization of grassland....Pages 371-375
Front Matter....Pages 377-380
Nitrogen dynamics of crop and soil subjected to different water and nitrogen inputs, including daily irrigation and steady-state fertilization-measurements and modelling....Pages 381-385
Modelling the uptake of nitrate by a growing plant with an adjustable root nitrate uptake capacity....Pages 387-387
Measurement and modelling of the effects of crop residues on nitrate loss from clay loam and sandy loam soils....Pages 389-393
Combining GIS and a dynamic nitrogen simulation model to assess nitrogen leaching susceptibility on a regional scale: A case study....Pages 395-399
Simulation by NCSWAP of the nitrogen dynamics under crop amended with sewage sludge in two soils....Pages 401-405
Modelling of nitrogen transformation in the soil....Pages 407-411
Kinetic mechanisms of N transformation by soil microorganisms: Experimental studies and mathematical modelling....Pages 413-418
Modeling of nitrogen transformations and translocations....Pages 419-424
Measurement and modelling of soil organic matter decomposition using biochemical indicators....Pages 425-430
Application of nitrogen cycle modelling to land use policy issues: nitrate leaching from winter and spring cereal cropping....Pages 431-443
Alternative kinetic laws to describe the turnover of the microbial biomass....Pages 445-450
The decomposition of wheat and clover residues in soil: measurements and modelling....Pages 451-457
Front Matter....Pages 459-463
Evaluation of urease inhibitors for the reduction of ammonia volatilization following urea addition to flooded rice....Pages 465-469
Cation effects on ammonia volatilization loss from urea applied to a tropical soil....Pages 471-471
Technical possibilities to reduce ammonia emissions from animal husbandry....Pages 473-477
Laboratory measurements and simulations of ammonia volatilization from urea applied to calcareous Chinese loess soils....Pages 479-482
Front Matter....Pages 483-490
Production of N 2 O in soil during decomposition of dead yeast cells with different spatial distributions....Pages 491-497
An Open Gas-Flow System for Investigating the Response of Nitrous Oxide Fluxes from Soil Cores to Different Oxygen Concentrations....Pages 499-499
Correcting for Leaks from Megachambers....Pages 501-506
N 2 O Production in Freshwater Wetland Sediments with and without Added Nitrate....Pages 507-511
Nitrous Oxide Emissions from Soil Incorporation of Crop Residues....Pages 513-515
Losses and Flows of Nitrogen in the Norwegian Society....Pages 517-522
Comparison of N 2 O Flux Measurements Using Gas Chromatography and Photo-Acoustic Infra-Red Spectroscopy....Pages 523-525
Denitrification as Affected by Anaerobic and Aerobic Events....Pages 527-531
Denitrification in Acid Soils, In a Leaching Tube Decomposition Study of Bean Residues....Pages 533-536
N 2 O Emission from Soil Fertilized with Fymol Treated Slurry....Pages 537-542
Nitric Oxide (NO) release in activated sludge plants with nitrification and denitrification....Pages 543-547
Estimation of N 2 O fluxes under rape for biological fuel production, bare soil and grass fallow....Pages 549-551
Temporal Changes in N 2 O-Losses from Two Arable Soils....Pages 553-557
Factors Affecting Nitrous Oxide Emission from a Sandy Grassland Soil under Controlled Field Conditions....Pages 559-566
Emission of Nitrous Oxide and Denitrification from Danish Soils Amended with Slurry and Fertilizer....Pages 567-573
N 2 O-Emissions of Forest Soils in Northern Germany: Seasonal Variability and Influencing Parameters....Pages 575-579
Nitrous Oxide Emissions from Agricultural Fields: Assessment, Measurement and Mitigation....Pages 581-584
Nitric oxide (NO) emission by higher plants....Pages 585-588
Nitrous Oxide Formation in Black Earth Soils Depending on the Soil Water Content....Pages 589-602
N 2 O Emission in Selected Representative Soils of the North-Eastern Iberian Peninsula....Pages 603-606
Front Matter....Pages 607-611
Nitrite Accumulation in Soils upon Urea Application....Pages 613-619
Measurement of Field Scale N 2 O Emission Fluxes from a Wheat Crop Using Micrometeorological Techniques....Pages 499-499
Influence of carbon availability on the production of NO, N 2 O, N 2 and CO 2 by soil cores during anaerobic incubation....Pages 621-626
Nitric oxide production in Nitrosomonas europaea under Aerobic and anoxic conditions....Pages 627-632
Effect of ammonium and nitrate application on the NO and N 2 O emission out of different soils....Pages 633-639
The Effect of Soil pH on Nitrification in Coarse Sandy Soil....Pages 641-643
Nitrous Oxide Production from Different Forms of Fertiliser Nitrogen....Pages 645-654
Front Matter....Pages 655-658
Measuring and Modelling Nitrogen Leaching: Parallel Problems....Pages 659-662
Near Real-Time Determination of Nitrate Leaching as an Integrated Component of a Large Soil Block Experiment for Fine Resolution Investigation of Preferential Flow....Pages 663-663
N Leaching in Manured and Ammonium Nitrate Fertilized Lysimeters in Zimbabwe....Pages 665-670
Agricultural Nitrogen and Phosphorus Losses into Belgian Surface Waters....Pages 671-674
Influence of Long-Term Fertilisation on Nitrogen Leaching....Pages 675-680
Nitrate Attenuation under Fertiliser-Free Grass Strips....Pages 681-687
Front Matter....Pages 689-693
Is Deep-Freezing a Safe Method for Storing Soil Samples for Inorganic Nitrogen Determination?....Pages 695-701
Continuous cultivation of nitrosomonas europaea with complete biomass retention....Pages 703-703
Back Matter....Pages 705-708
....Pages 709-712