37 research outputs found
Legacy effects override soil properties for CO 2 and N 2 O but not CH 4 emissions following digestate application to soil
The application of organic materials to soil can recycle nutrients and increase organic matter in agricultural lands. Digestate can be used as a nutrient source for crop production but it has also been shown to stimulate greenhouse gas (GHG) emissions from amended soils. While edaphic factors, such as soil texture and pH, have been shown to be strong determinants of soil GHG fluxes, the impact of the legacy of previous management practices is less well understood. Here we aim to investigate the impact of such legacy effects and to contrast them against soil properties to identify the key determinants of soil GHG fluxes following digestate application. Soil from an already established field experiment was used to set up a pot experiment, to evaluate N2O, CH4 and CO2 fluxes from cattle‐slurry‐digestate amended soils. The soil had been treated with farmyard manure, green manure or synthetic N‐fertilizer, 18 months before the pot experiment was set up. Following homogenization and a preincubation stage, digestate was added at a concentration of 250 kg total N/ha eq. Soil GHG fluxes were then sampled over a 64 day period. The digestate stimulated emissions of the three GHGs compared to controls. The legacy of previous soil management was found to be a key determinant of CO2 and N2O flux while edaphic variables did not have a significant effect across the range of variables included in this experiment. Conversely, edaphic variables, in particular texture, were the main determinant of CH4 flux from soil following digestate application. Results demonstrate that edaphic factors and current soil management regime alone are not effective predictors of soil GHG flux response following digestate application. Knowledge of the site management in terms of organic amendments is required to make robust predictions of the likely soil GHG flux response following digestate application to soil
Automatische Auswertung von Messrastern zur Dehnungsanalyse (Strain Analysis by Automatic Grid Evaluation)
Untersuchung der Moeglichkeiten des Einsatzes der Stereolithograpie zum Bau von Blechumformwerkzeugen Schlussbericht
Available from TIB Hannover: F97B2332 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany)DEGerman
Untersuchung der Moeglichkeiten des Einsatzes der Stereolithograpie zum Bau von Blechumformwerkzeugen Schlussbericht
Available from TIB Hannover: F97B2332 / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDeutsche Forschungsgemeinschaft (DFG), Bonn (Germany)DEGerman
Umformtechnik 2000. Chance und Herausforderung Tagungsband
Available from TIB Hannover: RR 4752(3) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman
KdpD and KdpE, proteins that control expression of the kdpABC operon, are members of the two-component sensor-effector class of regulators.
Erhoehung der Prozess- und Qualitaetssicherheit beim Praegen dicker Bleche Abschlussbericht
SIGLEAvailable from TIB Hannover: RO 146(83) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekArbeitsgemeinschaft Industrieller Forschungsvereinigungen e.V., Koeln (Germany)DEGerman
Anwendungsrichtlinien zur Erhoehung der Prozesssicherheit unregelmaessiger Tiefziehteile unter spezieller Betrachtung des Einsatzes von Ziehstaeben Schlussbericht
SIGLEAvailable from TIB Hannover: RO 146(103) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekArbeitsgemeinschaft Industrieller Forschungsvereinigungen 'Otto von Guericke' e.V. (AIF), Koeln (Germany); Bundesministerium fuer Wirtschaft, Bonn (Germany)DEGerman
Beurteilung von Versagensfaellen beim Ziehen von Feinblechen durch visioplastische Formaenderungs- und Spannungsanalyse Schlussbericht fuer den Zeitraum: 01.10.1994 bis 31.12.1996
SIGLEAvailable from TIB Hannover: RO 146(99) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekArbeitsgemeinschaft Industrieller Forschungsvereinigungen e.V., Koeln (Germany)DEGerman