Publikationen

  • Ratjen A. M., Hirschberg L., v. Bothmer K.-F. (2019): “Ergebnisse der Zukunftswerkstatt Planzenbau Schleswig-Holstein, Teil 7 - Zwei Seiten der Digitalisierung“ Bauernblatt 25, 14-15.
  • Müller, M., Ratjen A. M., (2019): “Lokale Wetterdaten für digitale Entscheidungshilfen Bauernblatt 06, 28.
  • Ratjen A. M., Lemaire G., Kage H.,Plénet D., Justes E. (2018): Key variables for simulating leaf area and N status: Biomass based relations versus phenology driven approaches. European Journal of Agronomy, doi.org/10.1016/j.eja.2018.04.008
  • Webber, H., White, J.W., Kimball, B.A., Ewert, F., Asseng, S., Eyshi Rezaei, E., Pinter, P.J., Hatfield, J.L., Reynolds, M.P., Ababaei, B., Bindi, M., Doltra, J., Ferrise, R., Kage, H., Kassie, B.T., Kersebaum, K.-C., Luig, A., Olesen, J.E., Semenov, M.A., Stratonovitch, P., Ratjen, A.M., LaMorte, R.L., Leavitt, S.W., Hunsaker, D.J., Wall, G.W., und Martre, P. (2018): Physical robustness of canopy temperature models for crop heat stress simulation across environments and production conditions. Field Crops Research, 216, 75-88; doi: 10.1016/j.fcr.2017.11.005
  • Ratjen, A.M., Kage, H. (2017): Predicting the site specific soil N supply under winter wheat in Germany. Nutr. Cycl. Agroecosystems 1–11. doi: 10.1007/s10705-017-9850-1.
  • Ratjen, A. M., Kage H. (2017): Nitratvorräte im Unterboden erhöht. Bauernblatt 21, 27-28.
  • Ratjen, A.M., Kage, H., (2016). Modelling N and Dry Matter Partitioning between Leaf and Stem of Wheat under Varying N Supply. J. Agron. Crop Sci. 202, 576-586. doi:10.1111/jac.12180
  • Ratjen, A. M., Kage H. (2016): Abschläge bei der N-Spätgabe? Bauernblatt 22, 39-40.
  • Ratjen, A. M., Kage, H. (2016): Refined N-Fertilization of Winter Wheat: A model supported approach In: Sofia Delin (Ed.). Programme and Abstract book - Oral presentations- of the 19th Nitrogen Workshop - Efficient use of different sources of nitrogen in agriculture- from theory to practice. 27 June – 29 June 2016, Skara, Sweden, p. 13. (oral presentation)
  • Ratjen, A. M. (2016). FIELD DATA BASED DERIVATION OF PROCESS DECRIPTIONS IN CROP GROWTH MODELS. IS THERE STILL ROOM FOR IMPROVEMENT? Abstracts - Oral presentation. International Crop Modelling Symposium iCROPM2016, 15-17 March 2016, Berlin, Germany.
  • Ratjen, A.M., Neukam, D., Kage, H., (2016). A Simple Drought-Sensitive Model for Leaf : Stem Partitioning of Wheat. J. Agron. Crop Sci. 202, 300–308. doi:10.1111/jac.12165
  • Ratjen, A.M., Kage, H., (2015). Nitrogen-limited light use efficiency in wheat crop simulators: comparing three model approaches. J. Agric. Sci. (Cambridge University Press- first view), 1–12. doi:10.1017/S0021859615001082
  • Reinsdorf, E., Baumgärtel, G., Ratjen, A.M., Kage, H., 2016. Online optimieren. DLG Mittteilung, N-Düngung 20–22.
  • Ratjen A.M., Kage H. (2015): Düngeverordnung - besser als ihr Ruf? Land & Forst Nr. 41, S. 21-23.
  • Ratjen, A.M., Reinsdorf E. (2015): Modellgestützte N-Düngung von Winterweizen. 24. Thüringer Düngungs- und Pflanzenschutztagung. S. 35-39. (Vortrag)
  • Ratjen, A.M., Kage, H., (2015). Forecasting yield via reference- and scenario calculations. Comput. Electron. Agric. 114, 212 – 220. doi:http://dx.doi.org/10.1016/j.compag.2015.03.020
  • Heumann, S., Ratjen, A. M., Kage, H., Böttcher, J. (2014). Estimating net N mineralization under unfertilized winter wheat using simulations with NET N and a balance approach. Nutr. Cycl. Agroecosystems 1–14. doi:10.1007/s10705-014-9616-y
  • Ratjen, A.M. (2013): Modellgestützte N-Düngung von Winterweizen: Möglichkeiten und Grenzen. Norddeutsches Marktfruchtforum 2013. Schriftenreihe des Inst. f. Pflanzenbau u. Pflanzenzüchtung der CAU Kiel, 84, 75-81. (Vortrag)
  • Ratjen A.M. (2013). Modellgestützte N-Düngung von Winterweizen: Möglichkeiten und Grenzen. (Vortrag 3. Norddeutsches Marktfruchtforum 27.02.2013 )
  • Ratjen A.M., Kage H. (2013). Is mutual shading a decisive factor for differences in overall canopy specific leaf area of winter wheat crops? Field Crops Research 149:338–346
  • Ratjen, A. M., Kage, H. (2013): Is mutual shading a decisive factor for differences in overall canopy specific leaf area of winter wheat crops? ASA-CSSA-SSSA International Annual Meetings, 03-06.11.2013 in Tampa, Florida, USA. (Poster)
  • Ratjen, A.M. (2012): Modellgestützte N-Düngung in Winterweizen. Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, 24, 48-51: (Vortrag)
  • Ratjen, A.M., Böttcher, U. and Kage, H. (2012): Improved modeling of grain number in winter wheat. Field Crops Research, 133:167-175.
  • Ratjen, Arne M. (2012): Refined N-Fertilization of Winter Wheat: A model supported approach combining statistical and mechanistic components.
  • Ratjen, A. M., Boettcher, U., Kage, H. (2011): Improving Model Estimates of Grain Number in Winter Wheat. ASA-CSSA-SSSA International Annual Meetings, 16-19.10.2011 in San Antonio, TX, USA.
  • Ratjen, A.M.; Böttcher, U. und Kage, H., 2009. Modellansätze zur Schätzung der Kornzahl in Winterweizen. Mitt. Gesell. Pfl.bauwiss. 21, 19.
  • Meyer-Schatz, F., Ratjen, A. M., Kage, H., Heumann, S., Sieling, K., Böttcher, U. (2009) Developing an advisory system for N fertilisation of winter wheat at www.isip.de: I. Non-destructive measurement of Canopy parameters and simulation modelling. - In: Grignani, C., Acutis, M., Zavattaro, L., Bechini, L., Bertora, C., Marino Gallina, P. and Sacco, D. (eds.), Proceedings of the 16th Nitrogen Workshop - Connecting different scales of nitrogen use in agriculture, pp. 231-232
  • Ratjen A.M. (2008) Nutzung von Gärresten aus Biogasanlagen zur Kultivierung von Mikroalgen, Kiel, Univ, Master Thesis
  • Ratjen, A.M., Gerendás, J. (2008): Eignen sich Gärreste zur Kultivierung von Mikroalgen? Jahrestagung der Deutschen Gesellschaft für Pflanzenernährung, 23.-24. September 2008, Limburgerhof / Speyer.
  • Ratjen, A.M.; Gerendás J. (2009). A critical assessment of the suitability of phosphite as a source of phosphorus J. Plant Nutr. Soil Sci. 172, 821-828
  • Gerendás, J., Ratjen, A. M. (2007): Untersuchungen zur P-Düngewirkung von Phosphit. VDLUFA-Schriftenreihe No. 62 438-445 (Kongressband 2006 on CD-ROM). VDLUFA-Verlag, Darmstadt.
  • Ratjen A.M. (2005) Bedeutung von Phosphit in Landwirtschaft und Gartenbau. Kiel, Univ, Bachelor Thesis