Jan Kofod Schjørring

Jan Kofod Schjørring

Professor, emeritus

ORCID: 0000-0002-2852-3298

Publication year:
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1 - 50 out of 317Page size: 50
  1. 1995
  2. Published

    Ammonia volatilization in relation to nitrogen nutrition of young Brassica napus plants growing with controlled nitrogen supply

    Olsen, C., Mattsson, M. & Schjoerring, Jan K., 1995, In: Journal of Plant Physiology. 147, p. 306-312 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Published

    Apoplastic pH and ammonium concentration in leaves of Brassica napus L.

    Husted, Søren & Schjoerring, Jan K., 1995, In: Plant Physiology. 109, p. 1453-1460 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  4. Published

    Nitrogen incorporation and remobilization in different shoot components of field-grown winter oilseed rape (Brassica napus L.) as effected by rate of nitrogen application and irrigation

    Schjoerring, Jan K., Bock, J. G. H., Gammelvind, L., Jensen, C. R. & Mogensen, V. O., 1995, In: Plant and Soil. 177, p. 255-264 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Symbiotic N2-fixation by the cover crop Pueraria phaseoloides as influenced by litter mineralization

    Vesterager, J. M., Østerby, S., Jensen, E. S. & Schjoerring, Jan K., 1995, In: Plant and Soil. 177, p. 1-10 10 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. 1996
  7. Published

    A ¤passive flux sampler for measuring ammonia volatilization from manure storage facilities

    Sommer, S. G., Sibbesen, E., Nielsen, T., Schjoerring, Jan K. & Olesen, J. E., 1996, In: Journal of Environmental Quality. 25, 2, p. 241-247 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Ammonia compensation points in two cultivars of Hordeum vulgare L. during vegetative and generative growth

    Husted, Søren, Mattsson, M. & Schjoerring, Jan K., 1996, In: Plant, Cell and Environment. 19, p. 1299-1306 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  9. Published

    Ammonia emission from young barley plants: influence of N source, light/dark cycles and inhibition of glutamine synthetase

    Mattsson, M. & Schjoerring, Jan K., 1996, In: Journal of Experimental Botany. 47, 297, p. 477-484 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  10. Published

    Ammonia flux between oilseed rape plants and the atmosphere in response to changes in leaf temperature, light intensity, and air humidity

    Husted, Søren & Schjoerring, Jan K., 1996, In: Plant Physiology. 112, p. 67-74 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Characteristics of ammonia emission from barley plants

    Mattsson, M. & Schjoerring, Jan K., 1996, In: Plant Physiology and Biochemistry. 34, p. 691-695 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Competition for inorganic N in mixtures of white clover and ryegrass

    Høgh-Jensen, H. & Schjoerring, Jan K., 1996.

    Research output: Contribution to conference › Paper › Research

  13. Published

    Kompendium i planternes ernæring i land- og havebrug

    Jensen, Lars Stoumann, Eppendorfer, W. H., Magid, Jakob, Nielsen, N. E. & Schjoerring, Jan K., 1996, København: DSR. 411 p.

    Research output: Book/Report › Book › Education

  14. Published

    Leaf photosynthesis and drought adaptation in field-grown oilseed rape (Brassica napus L.)

    Jensen, C. R., Mogensen, V. O., Mortensen, G., Andersen, M. N., Schjoerring, Jan K., Thage, J. H. & Koribidis, J., 1996, In: Functional Plant Biology. 23, p. 631-644 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Management of biological nitrogen fixation in grass/clover leys

    Jensen, E. S., Jensen, H. H., Vanman Jørgensen, F., Schjoerring, Jan K. & Vinther, E. P., 1996. 8 p.

    Research output: Contribution to conference › Paper › Research

  16. Published

    Photosynthesis in leaves and siliques of winter oilseed rape (Brassica napus L.)

    Gammelvind, L., Schjoerring, Jan K., Mogensen, V. O., Jensen, C. R. & Bock, J. G. H., 1996, In: Plant and Soil. 186, p. 227-236 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. Published

    Quantification of ammonia exchange over agricultural cropland

    Schjoerring, Jan K., 1996.

    Research output: Contribution to conference › Paper › Research

  18. Published

    Residual nitrogen effect of clover-ryegrass sward on a subsequent cereal crop as studied by 15N methodology and mathematical modelling

    Høgh-Jensen, H. & Schjoerring, Jan K., 1996, Ikke angivet. Raupp, J. (ed.). Institute for Biodynamic Research, 12 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  19. Published

    Teoretiske øvelser i Planternes Ernæring på kurset: Plantevækstfaktorer og afgrødefysiologi A & B

    Husted, Søren, Høgh-Jensen, H., Jensen, Lars Stoumann, Magid, Jakob, Mattsson, M., Mueller, T., Nielsen, N. E., Schjoerring, Jan K. & Wollenweber, B., 1996

    Research output: Book/Report › Compendium/lecture notes › Education

  20. 1997
  21. Published

    Ammonia exchange between plants and the atmosphere: effects of ammonium supply to the roots, dark-induced senescence and reduced GS activity

    Mattsson, M. & Schjoerring, Jan K., 1997, Developments in plant and soil sciences. Ando, T. . . A. . (ed.). 78 ed. Kluwer Academic Publishers, p. 827-831 5 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  22. Published

    Ammonia exchange between plants and the atmosphere: effects of ammonium supply to the roots, dark-induced senescence and reduced GS activity

    Mattsson, M. & Schjoerring, Jan K., 1997, In: Soil Science and Plant Nutrition. 43, p. 1113-1117 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Ammonia volatilization from pig slurry applied with trail hoses or broadspread to winter wheat: effects of crop developmental stage, microclimate, and leaf ammonia absorption

    Sommer, S. G., Friis, E., Bach, A. & Schjoerring, Jan K., 1997, In: Journal of Environmental Quality. 26, 4, p. 1153-1160 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Biologisk kvælstoffiksering og recirkulering

    Jensen, E. S., Jørgensen, F., Vinther, F. P., Høgh-Jensen, H. & Schjoerring, Jan K., 1997, Økologisk planteproduktion. Kristensen, E. S. (ed.). Tjele: Danmarks Jordbrugsforskning, Forskningscenter Foulum, Vol. 1997. p. 101-106 6 p. (SP rapport / Statens Planteavlsforsøg).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  25. Published

    Emission af ammoniak fra planter

    Husted, Søren & Schjoerring, Jan K., 1997, In: Tidsskrift for Landoekonomi. 184, p. 233-240 8 p.

    Research output: Contribution to journal › Journal article › Research

  26. Published

    Interactions between white clover and ryegrass under contrasting nitrogen availability: N2 fixation, N fertilizer recovery, N transfer and water use efficiency

    Jensen, H. H. & Schjoerring, Jan K., 1997, In: Plant and Soil. 197, p. 187-199 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    Isolation and characterization of a high affinity SO42-transporter from Hordeum vulgare cv. Klondike

    Vidmar, J. J., Schjoerring, Jan K. & Glass, A. D. M., 1997, Ikke angivet. Cram, W. J., Kok, L. J. D., Stulen, I., Brunold, C. & Rennenberg, H. (eds.). Backhuys Publishers, p. 173-175 3 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  28. Published

    Kinetics of nitrate and ammonium absorption and accompanying H+ fluxes in roots of Lolium perenne L. and N2-fixing Trifolium repens L.

    Jensen, H. H., Wollenweber, B. & Schjoerring, Jan K., 1997, In: Plant, Cell and Environment. 20, p. 1184-1192 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Leaf-atmosphere NH3 exchange in barley mutants with reduced activities of glutamine synthetase

    Mattsson, M., Häusler, R. E., Leegood, R. C., Lea, P. J. & Schjoerring, Jan K., 1997, In: Plant Physiology. 114, p. 1307-1312 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Measurement of ammonia gas emission from plants

    Schjoerring, Jan K. & Husted, Søren, 1997, Plant volatile analysis. Linskens, H. -F. & Jackson, J. F. (eds.). Berlin: Springer, Vol. 19. p. 73-95 23 p. (Modern methods of plant analysis).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  31. Published

    Plant nutrition, soil fertility, fertilizers and fertilization

    Jensen, Lars Stoumann, Magid, Jakob, Nielsen, G. G., Nielsen, H. H., Nielsen, N. E. & Schjoerring, Jan K., 1997, København: Jordbrugsforlaget. 307 p.

    Research output: Book/Report › Book › Education

  32. Published

    Plant-atmosphere ammonia exchange: quantification, physiological regulation and interactions with environmental factors

    Schjoerring, Jan K., 1997, Copenhagen: The Royal Veterinary and Agricultural University, Department of Agricultural Sciences, Plant Nutrition and Soil Fertility Laboratory. 334 p.

    Research output: Book/Report › Ph.D. thesis › Research

  33. Published

    Plantevækstfaktorer og afgrødefysiologi: teoretiske øvelser i planternes ernæring

    Husted, Søren, Høgh-Jensen, H., Jensen, Lars Stoumann, Magid, Jakob, Mattsson, M., Mueller, T., Nielsen, N. E. & Schjoerring, Jan K., 1997, København: Jordbrugsforlaget. 134 p.

    Research output: Book/Report › Book › Education

  34. Published

    Pod photosynthesis and drought adaptation of field grown rape (Brassica napus L.)

    Mogensen, V. O., Jensen, C. R., Mortensen, G., Andersen, M. N., Schjoerring, Jan K., Thage, J. H. & Koribidis, J., 1997, In: European Journal of Agronomy. 6, p. 295-307 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  35. Published

    Residual nitrogen effect of clover-ryegrass swards on yield and N uptake of a subsequent winter wheat crop as studied by use of 15N methodology and mathematical modelling

    Jensen, H. H. & Schjoerring, Jan K., 1997, In: European Journal of Agronomy. 6, p. 235-243 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  36. Published

    The ¤EXAMINE project: exchange of atmospheric ammonia with European ecosystems

    Sutton, M. A., Nemitz, E., Fowler, D., Wyers, G. P., Otjes, R., José, R. S., Moreno, J., Schjoerring, Jan K., Husted, Søren, Meixner, F. X., Ammann, C., Neftel, A. & Gut, A., 1997, Ikke angivet. Borrell, P. A., Borell, P., Kelly, K. & Seiler, W. (eds.). Computational Mechanics, p. 155-161 7 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  37. 1998
  38. Published

    Ammonia: emission, atmospheric transport and deposition

    Asman, W. A. H., Sutton, M. A. & Schjoerring, Jan K., 1998, In: New Phytologist. 139, p. 27-48 22 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Ammonium and soluble amide-bound nitrogen in leaves of Brassica napus as related to glutamine synthetase activity and external N supply

    Finnemann, J. & Schjoerring, Jan K., 1998, In: Plant Physiology and Biochemistry. 36, 5, p. 339-346 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Atmospheric ammonia and impacts of nitrogen deposition: uncertainties and challenges

    Schjoerring, Jan K., 1998, In: New Phytologist. 139, p. 59-60 2 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Biological nitrogen fixation in grass-clover leys and its transfer to subsequent crops

    Jensen, H. H. & Schjoerring, Jan K., 1998, APMinderhoudhoeve-reeks. Keulen, H. V., Lantinga, E. A. & Laar, H. H. V. (eds.). 2 ed. Landbouwuniversiteit Wageningen, p. 185-190 6 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  42. Published

    Dynamic interactions between root NH4+ influx and long-distance N translocation in rice: insights into feedback processes

    Kronzucker, H. J., Schjoerring, Jan K., Erner, Y., Kirk, G. J. D., Siddiqi, M. Y. & Glass, A. D. M., 1998, In: Plant and Cell Physiology. 39, 12, p. 1287-1293 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. Published

    Influence of nitrogen nutrition and metabolism on ammonia volatilization in plants

    Mattsson, M., Husted, Søren & Schjoerring, Jan K., 1998, In: Nutrient Cycling in Agroecosystems. 51, p. 35-40 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  44. Published

    Kinetics of NH4+ and NO3-absorption and H+ fluxes in ryegrass and N2-fixing white clover

    Høgh-Jensen, H., Wollenweber, B. & Schjoerring, Jan K., 1998, Current plant science and biotechnology in agriculture. Elmerich, C., Kondorosi, A. & Newton, W. E. (eds.). 31 ed. Kluwer Academic Publishers, p. 162 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  45. Published

    Physiological parameters controlling plant-atmosphere ammonia exchange

    Schjoerring, Jan K., Husted, Søren & Mattsson, M., 1998, In: Atmospheric Environment. 32, 3, p. 491-498 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    Plant nutrition, soil fertility, fertilizers and fertilization

    Jensen, Lars Stoumann, Magid, Jakob, Nielsen, G. G., Nielsen, H. H., Nielsen, N. E. & Schjoerring, Jan K., 1998, 2. ed. København: Jordbrugsforlaget. 471 p.

    Research output: Book/Report › Book › Education

  47. Published

    Rapsplanters kvælstofomsætning

    Schjoerring, Jan K., Husted, Søren, Høier Nielsen, K. & Finnemann, J., 1998, Biokemisk, fysiologiske, molekylærbiologiske og reistensbiologiske undersøgelser i vinterraps. p. 43-53 11 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  48. Published

    Regulation of apoplastic NH4+ concentration in leaves of oilseed rape

    Høier Nielsen, K. & Schjoerring, Jan K., 1998, In: Plant Physiology. 118, p. 1361-1368 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  49. Published

    Soil-plant-atmosphere ammonia exchange associated with Calluna vulgaris and Deschampsia flexuosa

    Schjoerring, Jan K., Husted, Søren & Poulsen, M. M., 1998, In: Atmospheric Environment. 32, 3, p. 507-512 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. 1999
  51. Published

    Dinitrogen fixation in white clover grown in pure stand and mixture with ryegrass estimated by the immobilized 15N isotope dilution method

    Vanman Jørgensen, F., Jensen, E. S. & Schjoerring, Jan K., 1999, In: Plant and Soil. 208, p. 293-305 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  52. Published

    Inorganic nitrogen absorption by plant roots: physiology and molecular biology

    Glass, A. D. M., Erner, Y., Hunt, T., Kronzucker, H. J., Okamoto, M., Rawat, S., Silim, S., Schjoerring, Jan K., Siddiqi, M. Y., Vidmar, J. J., Wang, M. Y. & Zhuo, D., 1999, Ikke angivet. Gissel-Nielsen, G. & Jensen, A. (eds.). Humana Press, p. 1-16 16 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  53. Published

    Measurements and modelling of NH3 fluxes with European ecosystems

    Sutton, M. A. & Schjoerring, Jan K., 1999.

    Research output: Contribution to conference › Paper › Research

  54. Published

    Plant nutrition, soil fertility, fertilizers and fertilization

    Jensen, Lars Stoumann, Husted, Søren, Magid, Jakob, Nielsen, G. G., Nielsen, H. H., Nielsen, N. E. & Schjoerring, Jan K., 1999, 3. ed. København: Jordbrugsforlaget. 527 p.

    Research output: Book/Report › Book › Education

  55. Published

    Regulation of ammonium distribution in plants

    Schjoerring, Jan K., Finnemann, J., Husted, Søren, Mattsson, M., Høier Nielsen, K. & Pearson, J. N., 1999, Ikke angivet. Gissel-Nielsen, G. & Jensen, A. (eds.). Humana Press, p. 69-82 14 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

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