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  1. Nitrogen leaching and N use efficiency after application of zeolite and the nitrification inhibitor DMPP in a pot experiment with spring wheat

    Roumani, Azam / Olfs, Hans-Werner | Taylor & Francis Verlag | 2021

  2. Effect of the nitrification inhibitor DMPP on nitrous oxide emissions and the stabilization of ammonium following the injection of dairy slurry and digestate in a soil‐column experiment

    ten Huf, Martin / Olfs, Hans-Werner | Wiley | 2020

  3. Improved precision of arable nitrogen applications : requirements, technologies and implementation ; paper presented to The International Fertiliser Society at a Conference in Cambridge, on 10th December 2009

    Olfs, Hans-Werner | Catalogue agriculture | 2009

  4. Nitratauswaschung : Ursachen und Maßnahmen zur Minimierung

    Baumgärtel, Gerhard / Olfs, Hans-Werner | TIBKAT | 2013

  5. Soil- and plant-based nitrogen-fertilizer recommendations in arable farming

    Olfs, Hans-Werner | Online Contents | 2005

  6. Soil N transformations after application of 15N-labeled biomass in incubation experiments with repeated soil drying and rewetting

    Olfs, Hans-Werner | Online Contents | 2004

  7. Charakterisierung des N-Umsatzes im Boden durch mikrobiologische und chemische Parameter und Bedeutung dieser Kenngrössen für die Ableitung von N-Düngebedarfsprognosen

    Olfs, Hans-Werner | TIBKAT | 1992

  8. Soil N transformations after application of 15N‐labeled biomass in incubation experiments with repeated soil drying and rewetting

    Olfs, Hans‐Werner / Neu, Anni / Werner, Wilfried | Wiley | 2004

  9. Enhanced nutrient use efficiencies from liquid manure by positioned injection in maize cropping in northwest Germany

    Federolf, Carl-Philipp / Westerschulte, Matthias / Olfs, Hans-Werner et al. | Elsevier | 2016

  10. Nitrogen dynamics following slurry injection in maize: soil mineral nitrogen

    Westerschulte, Matthias / Federolf, Carl-Philipp / Trautz, Dieter et al. | Online Contents | 2016

  11. SOIL MINERAL NITROGEN DYNAMICS IN MAIZE AFTER SLURRY INJECTION COMPARED TO BROADCAST APPLICATION

    Westerschulte, Matthias / Federolf, Carl-Philipp / Trautz, Dieter et al. | British Library Conference Proceedings | 2016

  12. USING LIQUID MANURE AS SIDE DRESS FERTILIZER IN MAIZE

    Federolf, Carl-Philipp / Westerschulte, Matthias / Olfs, Hans-Werner et al. | British Library Conference Proceedings | 2016

  13. Nitrogen dynamics following slurry injection in maize: crop development

    Federolf, Carl-Philipp / Westerschulte, Matthias / Olfs, Hans-Werner et al. | Online Contents | 2016

  14. Slurry injection with nitrification inhibitor in maize: Plant phosphorus, zinc, and manganese status

    Westerschulte, Matthias / Federolf, Carl-Philipp / Trautz, Dieter et al. | Taylor & Francis Verlag | 2018

  15. Nitrogen dynamics following slurry injection in maize: soil mineral nitrogen

    Westerschulte, Matthias / Federolf, Carl-Philipp / Trautz, Dieter et al. | Online Contents | 2016

  16. Optical Spectrometry to Determine Nutrient Concentrations and other Physicochemical Parameters in Liquid Organic Manures: A Review

    Free access
    Horf, Michael / Vogel, Sebastian / Drücker, Harm et al. | DataCite | 2022

  17. Nitrogen dynamics following slurry injection in maize: crop development

    Federolf, Carl-Philipp / Westerschulte, Matthias / Olfs, Hans-Werner et al. | Online Contents | 2016

  18. Nitrogen fertilizer–induced mineralization of soil organic C and N in six contrasting soils of Bangladesh

    Khalil, Mohammad I. / Rahman, Muhammad S. / Schmidhalter, Urs et al. | Wiley | 2007

  19. Fertilizers, agronomy and N2O

    National licence
    Bøckman, Oluf Chr. / Olfs, Hans-Werner | Springer Verlag | 1998

  20. Fertilizers, agronomy and $ N_{2} $O

    Bøckman, Oluf Chr. / Olfs, Hans-Werner | Online Contents | 1998

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