By Eriksen J.   Olesen J.E.   Askegaard M.   in European Journal of Agronomy

ISSN:1161-0301|17|1|1-9

Elsevier‎(2002)‎

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By Askegaard M.   Hansen H.   Schjoerring J.   in Plant and Soil

ISSN:0032-079X|271|1-2|63-74

Springer Publishing Company ‎(2005)‎

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