Aarhus University Seal / Aarhus Universitets segl

Ib Sillebak Kristensen

  1. 2020
  2. Published

    Miljøpåvirkning fra udendørs hold af grise – Del 2. / Kongsted, Anne Grete; Kristensen, Ib Sillebak; Pedersen, Birger Faurholt; Eriksen, Jørgen; Kristensen, Troels.

    DCA - Nationalt Center for Fødevarer og Jordbrug, 2020. 33 p.

    Research output: Book/anthology/dissertation/reportReportCommissioned

  3. Published

    Opdatering af kvælstofudvaskning fra økologiske bedrifter. / Olesen, Jørgen E; Kristensen, Troels; Kristensen, Ib Sillebak; Børgesen, Christen Duus; Eriksen, Jørgen; Pedersen, Birger Faurholt; Kongsted, Anne Grete.

    DCA - Nationalt Center for Fødevarer og Jordbrug, 2020. 58 p. (DCA rapport; No. 176).

    Research output: Book/anthology/dissertation/reportReportCommissioned

  4. Published

    Slagtegrise på friland med høj tilvækst og fodereffektivitet. / Kongsted, Anne Grete; Kristensen, Ib Sillebak; Andersen, Heidi Mai-Lis.

    In: Økologisk Landbrug, 2020.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  5. 2019
  6. Published
  7. Published

    Udredning om anvendelse af gødning i dansk landbrug i relation til indførslen af fosforlofter. / Sørensen, Peter; Poulsen, Hanne Damgaard; Rubæk, Gitte Holton; Vinther, Finn Pilgaard; Pedersen, Birger Faurholt; Kristensen, Ib Sillebak.

    DCA - Nationalt Center for Fødevarer og Jordbrug, 2019. 65 p. (DCA rapport; No. 160, Vol. DCA rapport).

    Research output: Book/anthology/dissertation/reportReportCommissioned

  8. Published
  9. Published
  10. 2018
  11. Published

    A comparison of disaggregated nitrogen budgets for Danish agriculture using Europe-wide and national approaches. / Kros, Johannes; Hutchings, Nicholas J.; Kristensen, Inge Toft; Kristensen, Ib Sillebak; Børgesen, Christen Duus; Voogd, Jan Cees; Dalgaard, Tommy; de Vries, Wim.

    In: Science of the Total Environment, Vol. 643, No. December, 01.12.2018, p. 890-901.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  12. Published

    Landbrugets produktion og fødevarernes klimabelastning. / Kristensen, Ib Sillebak.

    24 p. 2018Landbrugets produktion og fødevarernes klimabelastning..

    Research output: Other contributionNet publication - Internet publicationEducation

  13. Published

    Sensitivity of silage-maize to climate change in Denmark : A productivity analysis using impact response surface. / Ozturk, Isik; Kristensen, Ib Sillebak; Baby, Sanmohan.

    In: European Journal of Agronomy, Vol. 98, No. August, 01.08.2018, p. 55-64.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  14. Published

    Bæredygtighedsparametre for konventionelle fodermidler til kvæg. / Mogensen, Lisbeth; Knudsen, Marie Trydeman; Dorca-Preda, Teodora; Nielsen, Nicolaj Ingemann; Kristensen, Ib Sillebak; Kristensen, Troels.

    DCA - Nationalt Center for Fødevarer og Jordbrug, 2018. 133 p. (DCA rapport; No. 116).

    Research output: Book/anthology/dissertation/reportReportResearch

  15. Published
  16. Published

    Forage management to improve on-farm feed production, nitrogen fluxes and greenhouse gas emissions from dairy systems in a wet temperate region. / Doltra, J; Villar, A.; Moros, R; Salcedo, G.; Hutchings, Nicholas John; Kristensen, Ib Sillebak.

    In: Agricultural Systems, Vol. 160, 2018, p. 70-78.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  17. 2017
  18. Published

    Ressourcekredsløbet i dansk landbrug. / Hermansen, John Erik; Kristensen, Ib Sillebak; Kristensen, Troels.

    No. 2017-760-000234, 2017. 4 p., Jun 01, 2017.

    Research output: Memorandum/expositionMemorandum

  19. Published
  20. Published

    Environmental life cycle assessments of producing maize, grass-clover, ryegrass and winter wheat straw for biorefinery. / Parajuli, Ranjan; Kristensen, Ib Sillebak; Knudsen, Marie Trydeman; Mogensen, Lisbeth; Corona, Andrea; Birkved, Morten; Peña, Nancy; Graversgaard, Morten; Dalgaard, Tommy.

    In: Journal of Cleaner Production, Vol. 142, No. 4, 2017, p. 3859-3871.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  21. 2016
  22. Published
  23. Published
  24. Published

    A comparison of disaggregated nitrogen budgets for Danish agriculture. / Kros, H.; Hutchings, Nicholas John; Kristensen, Inge Toft; Kristensen, Ib Sillebak; Børgesen, Christen Duus; Voogd, J.C.; Dalgaard, Tommy; de Vries, W.

    Solutions to improve nitrogen use efficiency for the world. 2016.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  25. Published

    Effect of feed ration composition on sustainability. / Mogensen, Lisbeth; Knudsen, Marie Trydeman; Kristensen, Ib Sillebak; Nielsen, N I; Kristensen, Troels.

    In: EAAP Book of Abstracts, No. 22, 2016, p. 137.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperConference abstract in journalResearchpeer-review

  26. Published

    Effekten af N-gødskning og efterafgrøde på N-udvaskning i majs. / Hansen, Elly Møller; Kristensen, Ib Sillebak.

    Plantekongres 2016. 2016. p. 92-93.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsCommunication

  27. Published

    How well do we understand the N dynamics of grass/clover pastures? / Hutchings, Nicholas John; Topp, C.; Kristensen, Ib Sillebak.

    2016. Abstract from ESA14, Edinburgh, United Kingdom.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  28. Published

    Mesures to reduce the greenhouse gas emissions from dairy farming and their effect on nitrogen flows. / Hutchings, Nicholas John; Kristensen, Ib Sillebak.

    19th Nitrogen Workshop: Efficient use of different sources of nitrogen in agriculture – from theory to practice. 2016. p. 179-181.

    Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearchpeer-review

  29. Published

    Productivity and sustainability indicators of existing forage cropping systems in dairy farms of Northern Spain. / Doltra, J.; Villar, A.; Moros, R.; Salecedo, G.; Hutchings, Nicholas John; Kristensen, Ib Sillebak.

    2016. Abstract from ESA14, Edinburgh, United Kingdom.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  30. Published

    Why Danish pig farms have far more land and pigs than Dutch farms? Implications for feed supply, manure recycling and production costs. / Willems, Jaap; van Grinsven, H.J.M.; Jacobsen, Brian H; Jensen, Tenna; Dalgaard, Tommy; Westhoek, Henk; Kristensen, Ib Sillebak.

    In: Agricultural Systems, Vol. 144, 2016, p. 122-132.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  31. 2015
  32. Published

    Nitratudvaskning i majs og vårbyg med og uden efterafgrøde i 2014-2015. / Hansen, Elly Møller; Kristensen, Ib Sillebak.

    In: Oversigt over Landsforsoegene, Vol. 2015, 12.2015, p. 193-197.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleCommunication

  33. Published

    Udvaskning efter majs med forskellige forfrugter, 2009-2011. / Kristensen, Ib Sillebak; Manevski, Kiril; Jørgensen, Uffe.

    In: Oversigt over Landsforsoegene, Vol. 2015, 12.2015, p. 197-199.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleCommunication

  34. Published

    N-flow in Danish agriculture And FarmAC in Amazonas : Training course on “Livestock and Climate Change” in Latin America. / Kristensen, Ib Sillebak; Hutchings, Nicholas John.

    2015. Abstract from Training course on “Livestock and Climate Change" in Latin America, Campinas, Brazil.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  35. Published

    Kvantificering af produktion og ressourceeffektivitet i jordbruget – korn, mælk og svinekød : Korn, mælk og svinekød. / Kristensen, Troels; Kristensen, Ib Sillebak; Hermansen, John Erik.

    DCA - Nationalt Center for Fødevarer og Jordbrug, 2015. 40 p. (DCA rapport, Vol. 055).

    Research output: Book/anthology/dissertation/reportReportCommissioned

  36. Published
  37. Published

    Efterafgrøder i majs. / Kristensen, Ib Sillebak; Hansen, Elly Møller; Loges, R.; Herrmann, A.

    2015.

    Research output: Working paperCommissioned

  38. Published

    Reduced nitrogen leaching by intercropping maize with red fescue on sandy soils in North Europe : A combined field and modeling study. / Manevski, Kiril; Børgesen, Christen Duus; Andersen, Mathias Neumann; Kristensen, Ib Sillebak.

    In: Plant and Soil, Vol. 388, No. 1-2, 2015, p. 67-85.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  39. Published

    Report on adaptation and mitigation options in the showcase farms. Report on non-European studies : Deliverable D10.5. / Stienezen, M.; Kristensen, Ib Sillebak; Olesen, Jørgen Eivind; Hutchings, Nicholas John; Mogensen, Lisbeth; Barioni , Luís ; Veloso , Rui ; Burlamaqui , Amaury ; Bonnet, Olivier ; Carvalho, Paulo de Faccio ; Tesfamariam , Eyob ; Hassen , Abubeker ; Vayssières , Jonathan ; Lecomte , Philippe.

    2015. 73 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  40. Published

    Report on farm scale eco-efficiency of mitigation and adaption options. D10.3. / Kristensen, Ib Sillebak; Olesen, Jørgen Eivind; Hutchings, Nicholas John; Mogensen, Lisbeth; Faverdin, P.; Topp, Kairsty ; Barradas, Ana ; Godinho, Bruno ; O'Brien, Donald ; Shalloo, Laurence ; Holshof , Gertjan ; Perdok , Hink ; Stienezen, Marcia .

    2015. 125 p.

    Research output: Book/anthology/dissertation/reportReportResearchpeer-review

  41. Published

    Trends, challenges and prospects for improved N management and N efficiency in Denmark. / Dalgaard, Tommy; Hansen, B.; Hasler, B.; Hertel, O.; Hutchings, Nicholas John; Jacobsen, B.H.; Jensen, L.S.; Kronvang, B.; Olesen, Jørgen Eivind; Schjørring, J.H.; Kristensen, Ib Sillebak; Graversgaard, Morten; Termansen, M.; Vejre, H.

    International workshop of nitrogen footprint update in Japan: Local reality and global connection. 2015.

    Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearch

  42. Published

    Udvikling af TS i majshelsæd og kolbemajs i 2009-2014. / Kristensen, Ib Sillebak.

    2015. 30 p.

    Research output: Memorandum/expositionMemorandum

  43. 2014
  44. Published
  45. Published
  46. Published

    Danish internet tool for prognosis of dry matter development in silage maize. / Kristensen, Ib Sillebak.

    In: NJF Report, Vol. 10, No. 475, 2014, p. 51-52.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  47. Published

    Environmental impacts of maize cultivation in Denmark and in North China Plain. / Manevski, Kiril; Børgesen, Christen Duus; Li, X.; Hu, C.; Kristensen, Ib Sillebak; Andersen, Mathias Neumann.

    Proceedings of the 18 Nitrogen Workshop - The nitrogen challenge: building a blueprint for nitrogen use efficiency and food security. ed. / C M d S Cordovil. 2014. p. 137-139.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  48. Published

    Implementation of mitigation and adaptation measures in the farm-scale model Farm. / Hutchings, Nicholas John; Jørgensen, M.S.; Vejlin, Jonas; Kristensen, Ib Sillebak; Cutullic, E. .

    2014. Poster session presented at AnimalChange Annual meeting, Madrid, Denmark.

    Research output: Contribution to conferencePosterResearch

  49. Published

    Parameterization of maize phenology, canopy development and dry matter partitioning in cool versus warm climate. / Manevski, Kiril; Børgesen, Christen Duus; Andersen, Mathias Neumann; Kristensen, Ib Sillebak.

    In: NJF Report, Vol. 10, No. 6, 2014, p. 47-48.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  50. Published

    Policies for agricultural nitrogen management-trends, challenges and prospects for improved efficiency in Denmark. / Dalgaard, Tommy; Hansen, Birgitte; Hasler, Berit; Hertel, Ole; Hutchings, Nicholas John; Jacobsen, Brian H.; Jensen, Lars Stoumann; Kronvang, Brian; Olesen, Jørgen E; Schjørring, Jan K.; Kristensen, Ib Sillebak; Graversgaard, Morten; Termansen, Mette; Vejre, Henrik.

    In: Environmental Research Letters, Vol. 9, No. 11, 2014.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  51. Published

    Risiko for nitratudvaskning i majs om foråret. / Hansen, Elly Møller; Kristensen, Ib Sillebak.

    In: Oversigt over Landsforsoegene, Vol. 2014, 2014, p. 200-202.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  52. 2013
  53. Published
  54. Published
  55. Published

    Leaching from maize in Denmark : Biodiversity and Environmental Issues. / Kristensen, Ib Sillebak; Manevski, Kiril.

    2013. Abstract from European Maize Meeting 2013, BERGAMO, Italy.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  56. Published

    Måling af udvaskning 2012 til 2013. / Hansen, Elly Møller; Kristensen, Ib Sillebak; Jensen, Johannes Lund.

    In: Oversigt over Landsforsoegene, Vol. 2013, 2013, p. 213-217.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleCommunication

  57. 2012
  58. Published

    Afgrøders betydning for udvaskning til brug for en sårbarhedsdifferentieret regulering. / Vinther, Finn Pilgaard; Børgesen, Christen Duus; Kristensen, Ib Sillebak; Sørensen, Peter; Olesen, Jørgen E.

    No. 973521, 2012. 19 p., Nov 02, 2012.

    Research output: Memorandum/expositionMemorandum

  59. Published

    Notat om muligheder for udvikling af supplerende modul til Farm-N til beregning af udvaskning ved længere tidshorisont. / Vinther, Finn Pilgaard; Sørensen, Peter; Kristensen, Ib Sillebak.

    No. 967154, No. 27-07-12, 2012. 9 p., Oct 17, 2012.

    Research output: Memorandum/expositionMemorandum

  60. Published

    Notat om effekt af udnyttelsesprocent for afgasset gylle. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak; Sørensen, Peter.

    No. 962517, No. rekv. 27-07-12, 2012. 8 p., Oct 08, 2012.

    Research output: Memorandum/expositionMemorandum

  61. Published
  62. Published

    Kan kvælstofudvaskning fra majsdyrkning reduceres? / Kristensen, Ib Sillebak; Jørgensen, Uffe; Hansen, Elly Møller.

    Plantekongres 2012: Sammendrag af indlæg. Videncentret for Landbrug, Aarhus Universitet og Københavns Universitet, 2012. p. 43-45.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  63. Published

    Lokal kost - et bud på fremtidens økologi. / Mogensen, Lisbeth; Kristensen, Troels; Hermansen, John Erik; Kristensen, Ib Sillebak.

    In: Oekologi & Erhverv, No. 497, 2012, p. 14-14.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperContribution to newspaper - Newspaper article

  64. Published

    Supplerende undersøgelser af udvaskning af kvælstof til forsøget "Kvælstof til majs med efterafgrøder". / Kristensen, Ib Sillebak; Jørgensen, Uffe; Hansen, Elly Møller.

    In: Oversigt over Landsforsoegene, Vol. 2011, 2012, p. 376-380.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleCommunication

  65. Published

    Økologisk, klimaneutral kost produceret af den lokale helhedsbedrift – et bud på fremtidens økologi. / Mogensen, Lisbeth; Kristensen, Troels; Hermansen, John Erik; Kristensen, Ib Sillebak.

    In: ICROFS nyt, Vol. 1, 2012, p. 12-14.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperContribution to newspaper - Newspaper article

  66. 2011
  67. Published

    Majsproduktion og udvaskning. / Thomsen, Henning Carlo; Kristensen, Ib Sillebak.

    2011.

    Research output: Contribution to conferencePosterCommunication

  68. Published

    Majsproduktion og udvaskning. / Edlefsen, Ove; Kristensen, Ib Sillebak.

    2011.

    Research output: Contribution to conferencePosterCommunication

  69. Published

    Vedrørende effekten af slæt kontra afgræsning i baseline. / Kristensen, Troels; Kristensen, Ib Sillebak; Vinther, Finn Pilgaard.

    No. 766575, 2011. 3 p., Mar 09, 2011.

    Research output: Memorandum/expositionMemorandum

  70. Published

    Majshelsæds udvikling i kvalitet og udbytte 2010. / Kristensen, Ib Sillebak.

    2011.

    Research output: Working paperResearch

  71. Published
  72. Published

    Data requirements, availability and gaps in AEIs in Europe : Direct and indirect data needs linked to the farms for agrienvironmental indicators. / Vinther, Finn Pilgaard; Kudsk, Per Nielsen; Hutchings, Nicholas John; Kristensen, Ib Sillebak; Poulsen, Hanne Damgaard; Oenema, Oene; Elbersen, Berien; Peréz-Soba, Marta ; van Beek, Christy; Wilson, Lucy; Procter, Chris.

    Eurostat, 2011. 207 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  73. Published

    Forøgelse af ressourceeffektiviteten i mælkeproduktionen : INTERREG 4A Syddanmark-Schleswig-K.E.R.N., gefördert von der EU (European Union). / Loges, R. ; Biegemann, T.; Chen, S.; Schönbach, P; Kämper, M; Schmeer, M.; Herrmann, A.; Søegaard, Karen; Kristensen, Ib Sillebak; Edlefsen, Ove; Taube, F.

    2011.

    Research output: Other contributionNet publication - Internet publicationCommunication

  74. Published

    Fælles strategi for udfasning af konventionel husdyrgødning og halm i økologisk landbrugsproduktion. / Askegaard, M; Kristensen, Ib Sillebak; Mejnertsen, P; de Visser, R; Lund, A; Skou, N; Kristensen, E; Kristensen, Troels; Jensen, S L; Nissen, T; Bisgaard, N C ; Krogh, J; Jørgensen, K.

    2011.

    Research output: Other contributionNet publication - Internet publicationCommunication

  75. Published

    Leaching from Maize in Denmark. Agronomical advantages of maize and grass as fodder crops - an economical approach. / Kristensen, Ib Sillebak.

    2011. Abstract from Europena Maize Meeting 2011, Kiel, Germany.

    Research output: Contribution to conferenceConference abstract for conferenceResearch

  76. Published

    Pilot Studies on improving the quality of agri-environmental indicators : Pilot Studies on fodder production and coefficients for nutrients balances. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak; Kristensen, Inge Toft; Riberholdt, L.

    Danmarks Statistik, 2011. 44 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  77. Published

    Producing a local, organic diet gives a healthy, sustainable and more climate-friendly diet. / Mogensen, Lisbeth; Kristensen, Troels; Hermansen, John Erik; Kristensen, Ib Sillebak.

    Organic is life – Knowledge for tomorrow. ed. / D Neuhoff; N Halberg; I Rasmussen; J Hermansen; C Ssekyewa; S M Sohn. Vol. 2 2011. p. 68-71.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  78. Published

    Prognose for tørstofpct. i majshelsæd. / Kristensen, Ib Sillebak; Bøjer, Ole; Mikkelsen, Martin.

    2011.

    Research output: Other contributionNet publication - Internet publicationCommunication

  79. Published

    Rules and key values related to fertiliser and animal manure in general, updated to year 2010/2011. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak.

    Aarhus University, 2011.

    Research output: Working paperEducation

  80. 2010
  81. Published

    Vedrørende udvaskning fra majs. / Grant, Ruth; Blicher-Mathiesen, Gitte; Kristensen, Ib Sillebak; Hansen, Elly Møller; Kristensen, Inge Toft; Thomsen, Ingrid Kaag; Eriksen, Jørgen; Søegaard, Karen; Børgesen, Christen Duus; Vinther, Finn Pilgaard.

    No. 758179, 2010. 3 p., Sep 29, 2010.

    Research output: Memorandum/expositionMemorandum

  82. Published

    Hovednotat – opfølgning vedrørende implementering af nye regler i gødskningsloven. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak; Jørgensen, Uffe; Hansen, Elly Møller; Sørensen, Peter; Kristensen, Inge Toft; Søegaard, Karen; Kjærgaard, Charlotte; Petersen, Bjørn Molt; Børgesen, Christen Duus; Petersen, Jens.

    No. 713003, 2010. 25 p., Mar 25, 2010.

    Research output: Memorandum/expositionMemorandum

  83. Published

    Spørgsmål vedr. anvendelse vinterraps som efterafgrøder. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak.

    No. 703431, 2010. 4 p., Jan 29, 2010.

    Research output: Memorandum/expositionMemorandum

  84. Published

    Græs i sædskiftet - effekt af afstande og belægning. / Tvedegaard, Niels; Kristensen, Ib Sillebak; Kristensen, Troels.

    Økologisk græsmarksproduktion og udnyttelse til mælkeproduktion: Bilag til temadag arrangeret i samarbejde mellem FØJO III projekterne: ORMILKQUAL, ORGGRASS og ECOVIT. Vol. 27 Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2010. p. 59-64 (Intern rapport, Husdyrbrug; No. 27).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  85. Published

    Høstprognose i majs. / Kristensen, Ib Sillebak; Thysen, Iver; Bøjer, Ole Mission; Mikkelsen, Martin.

    Plantekongres 2010: Sammendrag af indlæg. Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2010. p. 50-52.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  86. Published

    Impact of organic pig production systems on CO2 emission, C sequestration and nitrate pollution. / Halberg, Niels; Hermansen, John Erik; Kristensen, Ib Sillebak; Eriksen, Jørgen; Tvedegaard, Niels; Petersen, Bjørn Molt.

    In: Agronomy for Sustainable Development, Vol. 30, No. 4, 2010, p. 721-731.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  87. 2009
  88. Published
  89. Published
  90. Published
  91. Published

    Næringsstofbalancer på bedriftsniveau til forenklet regulering af landbrugets næringsstofforbrug og -overskud. / Kristensen, Ib Sillebak; Hermansen, John Erik.

    Det jordbrugsvidenskabelige Fakultet, Aarhus Universitet, 2009. 36 p.

    Research output: Book/anthology/dissertation/reportReportCommissioned

  92. Published
  93. 2008
  94. Published

    Comparative environmental assessment of three systems for organic pig production in Denmark. / Halberg, Niels; Hermansen, John Erik; Kristensen, Ib Sillebak; Eriksen, Jørgen; Tvedegaard, Niels.

    Proceedings Organic Agriculture in Asia. ed. / U Köpke; S M Sohn. 2008. p. 249-261.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  95. Published

    Muligheder og barrierer i den økologiske planteproduktion. / Askegaard, Margrethe; Thorup-Kristensen, Kristian; Lindhard Pedersen, Hanne; Kristensen, Ib Sillebak; Oudshoorn, Frank W; Tersbøl, Michael.

    Udvikling, vækst og integritet: I den danske økologisektor. ed. / H F Alrøe; N Halberg. ICROFS, 2008. p. 187-222 (ICROFS Rapport; No. 1).

    Research output: Contribution to book/anthology/report/proceedingReport chapterResearch

  96. Published

    Potentialet for omlægning til økologisk jordbrug i Danmark. / Dalgaard, Tommy; Kjeldsen, Chris; Kristensen, Inge Toft; Kristensen, Ib Sillebak.

    Udvikling, vækst og integritet: I den danske økologisksektor. ed. / H F Alrøe; N Halberg. Foulum : ICROFS, 2008. p. 131-150 (ICROFS Rapport; No. 1).

    Research output: Contribution to book/anthology/report/proceedingReport chapterResearch

  97. Published

    Regulering af langtidsukrudt på økologiske brug. / Kristensen, Ib Sillebak.

    Slutrapport til ”Fonden for Økologisk Jordbrug”, 2008.

    Research output: Working paperResearch

  98. 2007
  99. Published
  100. Published

    A farm-scale internet-based tool for assessing nitrogen losses to the environment. / Hutchings, Nick; Petersen, Bjørn Molt; Kristensen, Ib Sillebak; Jørgensen, Margit Styrbæk; Vinther, Finn Pilgaard; Detlefsen, Nina.

    Field-farm scale design and improvement, book 2. ed. / M Donatelli; J Hatfield; A Rizzoli. LA GOLIARDICA PAVESE, 2007. p. 165-166.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  101. Published
  102. Published

    Beregningsmetode for kvælstofudvaskning. / Vinther, Finn Pilgaard; Kristensen, Ib Sillebak; Jørgensen, Margit Styrbæk.

    Principper for miljøgodkendelser af husdyrbrug i forhold til påvirkninger af grundvand, overfladevand og natur. 2007.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  103. Published

    Comparison of simulated and observed N-flows on pig farms in Denmark. / Olesen, Jørgen E; Hutchings, Nick; Petersen, Bjørn Molt; Kristensen, Ib Sillebak; Schelde, Kirsten; Lægdsmand, Mette.

    Farming systems design 2007, International Symposium on integrated analysis of farm production systems, book 2. ed. / M Donatelli; J Hatfield; A Rizzoli. LA GOLIARDICA PAVESE, 2007. p. 113-114.

    Research output: Contribution to book/anthology/report/proceedingConference abstract in proceedingsResearch

  104. Published

    Complicance with multiple EU directives when regulating farm intensification. / Hutchings, Nick; Kristensen, Ib Sillebak; Jørgensen, Margit Styrbæk; Petersen, Bjørn Molt; Vinther, Finn Pilgaard; Detlefsen, Nina.

    Ammonia: emissions in agriculture. ed. / Gert-Jan Monteny; Eberhard Hartung. Wageningen Academic Publishers, 2007. p. 265-266.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  105. Published

    Grovfoderudbytter i Danmark : Arbejdsrapport. / Søegaard, Karen; Kristensen, Ib Sillebak; Kristensen, Troels; Olesen, Svend Elsnab; Nielsen, Karsten A; Mikkelsen, Martin; Thøgersen, Rudolf; Aaes, Ole; Knudsen, Leif.

    Normudvalget for indstilling af kvælstof- og husdyrgødningsnormer, 2007.

    Research output: Working paperResearch

  106. Published

    How does organic farming manage without import of conventional manure and straw? / Kristensen, Ib Sillebak.

    NJF 23rd Congress 2007: Trends and perspectives in agriculture. ed. / M Lund; T U Larsen; J O Thøgersen; S Christensen; C Børsting; F Plauborg; L J Munkholm; J E Olesen; O Callesen; M Askegaard; J G Hansen; T Hvelplund. Vol. 3 Nordic Association of Agricultural Scientists, 2007. p. 195-196 (NJF Report; No. 2, Vol. 3).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  107. Published

    N-balances and model calculated N-losses from typical intensive dairy farms in Northern Europe. / Kristensen, Ib Sillebak; Kristensen, Troels.

    Permanent and Temporary Grassland Plant, Environment and Economy. ed. / A De Vliegher; L Carlier. Vol. 12 European Grassland Federation, 2007. p. 311-314 (Grassland science in Europe).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  108. 2006
  109. Published

    A farm-scale internet-based tool for assessing the effect of intensification on losses of nitrogen to the environment. / Hutchings, Nick; Kristensen, Ib Sillebak; Detlefsen, Nina; Petersen, Bjørn Molt; Jørgensen, Margit Styrbæk.

    Technology for recycling of manure and organic residues in a whole-farm perspective. Vol I: DIAS Report Plant production no. 122. ed. / Søren O Petersen. Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2006. p. 187-190 (DIAS report; No. 122).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  110. Published

    Estimated N leaching losses for organic and conventional farming in Denmark. / Knudsen, Marie Trydeman; Kristensen, Ib Sillebak; Berntsen, Jørgen; Petersen, Bjørn Molt; Kristensen, Erik Steen.

    In: Journal of Agricultural Science, Vol. 144, No. 2, 2006, p. 135-149.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  111. Published

    Estimation of N-surplus and losses in Denmark using 'Farm-N'. / Kristensen, Ib Sillebak.

    Sammendrag af indlæg. Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2006. p. 461-464.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  112. Published

    Farm-N: An internet-based tool for calculating the likely effect of intensification on losses of nitrogen. / Kristensen, Ib Sillebak; Detlefsen, Nina; Petersen, Bjørn Molt; Hutchings, Nick; Jørgensen, Margit Styrbæk.

    N management in agrosystems in relation to the Water Framework Directive. ed. / J.J. Schröder; J.J. Neeteson. Plant Research International, B.V., 2006. p. 57-60 (Plant Research International, B.V.; No. 116).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  113. Published

    Forbedret udnyttelse af økologiske landsforsøg. / Kristensen, Ib Sillebak.

    Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2006.

    Research output: Working paperResearch

  114. Published

    Gødning og halm i økologisk Jordbrug : Fokusområder 2004-2005. / Kyed, Sybille; Kristensen, Ib Sillebak; Tvedegaard, Niels.

    Økologisk Landsforening, 2006.

    Research output: Working paperResearch

  115. Published

    Kløverindhold i sædskiftekløvergræs på private kvægbrug i 2004. / Kristensen, Ib Sillebak.

    Aarhus Universitet, Det Jordbrugsvidenskabelige Fakultet, 2006.

    Research output: Working paperResearch

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