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Title of Journal: Nutr Cycl Agroecosyst

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Abbravation: Nutrient Cycling in Agroecosystems

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Springer Netherlands

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1573-0867

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Net N immobilisation during the biodegradation of

Authors: Christophe Nguyen Fabienne Froux Sylvie Recous Thierry Morvan Christophe Robin
Publish Date: 2007/07/12
Volume: 80, Issue: 1, Pages: 39-47
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Abstract

Repeated fertilisation of crops with manure commonly increases both the amount and the quality of soil organic matter the mineralisation of which strongly determines the availability of N to plants In the rhizosphere the microbial mineralisation/immobilisation of N is enhanced due to rhizodeposition release of organic compounds from roots In this work we studied N transformations during incubation of maize root mucilage in soils that had been previously fertilized with composted pig manure or with ammonium nitrate for 7 years Our work revealed mucilage was rapidly mineralised average halflife of 3 days inducing a rapid N immobilisation of 94 mg N g−1 of mucilage C followed by a slow remineralisation Fertilisation with manure induced a persistent stimulation of the soil organic matter mineralisation leading to an enhanced content of soil inorganic N +23 in 58 days of incubation Due to this stimulation of microbial activity in the soil fertilized with manure the decrease in inorganic N during the biodegradation of mucilage lasted a shorter time as compared to the mineral fertilisation However the type of fertilisation did not significantly change the amount of N immobilisedThis work was funded by the ‘Green pork production’ research initiative on environmentfriendly pig production The authors address special thanks to V Boitel ARVALIS Vegetal Institute Le Rheu France for providing the experimental plots We also thank S Bienaimé for inorganic N analysis S Deschaumes and P Marchal for their helpful contribution to the experiment


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Other Papers In This Journal:

  1. Amending soil with used cooking oil to reduce nitrogen losses after cole crop harvest: a 15 N study
  2. Effects of fertiliser type and the presence or absence of plants on nitrous oxide emissions from irrigated soils
  3. Relative contribution of trees and crops to soil carbon content in a parkland system in Burkina Faso using variations in natural 13 C abundance
  4. Shrubs affect soil nutrients availability with contrasting consequences for pasture understory and tree overstory production and nutrient status in Mediterranean grazed open woodlands
  5. Forecasting long-term global fertilizer demand
  6. 15 N tracer technique analysis of the absorption and utilisation of nitrogen fertiliser by potatoes
  7. Nitrogen, phosphorus, and potassium budgets in Indian agriculture
  8. Effects of different manuring systems with and without biogas digestion on nitrogen cycle and crop yield in mixed organic dairy farming systems
  9. Crop response of aerobic rice and winter wheat to nitrogen, phosphorus and potassium in a double cropping system
  10. Phosphorus and potassium cycling in a long-term no-till integrated soybean-beef cattle production system under different grazing intensities insubtropics
  11. Contribution of relay intercropping with legume cover crops on nitrogen dynamics in organic grain systems
  12. Method and timing of grassland renovation affects herbage yield, nitrate leaching, and nitrous oxide emission in intensively managed grasslands
  13. Mineralizable soil nitrogen and labile soil organic matter in diverse long-term cropping systems
  14. Accumulation of phosphorus fractions in typic Hapludalf soil after long-term application of pig slurry and deep pig litter in a no-tillage system
  15. Soil N 2 O fluxes in integrated production systems, continuous pasture and Cerrado
  16. Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe
  17. Gross nitrogen mineralization in pulse-crop rotations on the Northern Great Plains
  18. Management strategies for reducing soil degradation through modeling in a GIS environment in northern Ethiopia catchment
  19. Millet nutrient use efficiency as affected by natural soil fertility, mineral fertilizer use and rainfall in the West African Sahel
  20. Nitrogen fertilization and critical nitrogen concentration for contemporary high yielding cotton under no-tillage
  21. Effects of catch crops on silage maize ( Zea mays L.): yield, nitrogen uptake efficiency and losses
  22. Nitrogen input, 15 N balance and mineral N dynamics in a rice–wheat rotation in southwest China
  23. Nutrient cycling in an agroforestry alley cropping system receiving poultry litter or nitrogen fertilizer
  24. How much nitrogen is fixed by biological symbiosis in tropical dry forests? 2. Herbs
  25. Nitrogen fertilizer placement and timing affects bread wheat ( Triticum aestivum) quality and yield in an irrigated bed planting system
  26. Nitrogen fixation of red clover interseeded with winter cereals across a management-induced fertility gradient
  27. Response of bulk chemical composition, lignin and carbohydrate signature to grassland conversion in a ley-arable cropping system
  28. Nitrogen recovery and downslope translocation in maize hillside cropping as affected by soil conservation
  29. Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
  30. Long-term effects of fertilization and manuring on groundnut yield and nutrient balance of Alfisols under rainfed farming in India
  31. Response of intensively grazed ryegrass dairy pastures to fertiliser phosphorus and potassium
  32. Effect of seasonal rainfall, N fertilizer and tillage on N utilization by dryland wheat in a semi-arid environment
  33. Above- and belowground litter stocks and decay at a multi-species afforestation site on arid, saline soil
  34. Productivity of yam-based systems with herbaceous legumes and short fallows in the Guinea-Sudan transition zone of Benin

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