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Titre :
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The relationship between the growth rate of young plants and their total-N concentration is unique and simple: A comment
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Auteurs :
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F. Wikstrom ;
G. Agren
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Type de document :
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article/chapitre/communication
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Année de publication :
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1995
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Format :
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541-544
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Langues:
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= Anglais
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Mots-clés:
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cabbage
;
lettuce
;
model
;
nitrogen limitation
;
nitrogen productivity
;
relative growth rate
;
Modelisation
;
Croissance
;
Azote
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Résumé :
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A series of experiments with cabbage and lettuce, where nitrogen supply is interrupted at a given time and the future development of plant mass and of nitrogen concentration are observed, is re-analysed. Using the nitrogen productivity theory, it is shown that plant properties determined from growth under unlimited nitrogen supply also explain the behaviour under interrupted nitrogen supply. This is in contrast to the suggestion of the original author Burns 1994, Annals of Botany 74 : 143-157, who questions the existence of a unique relationship between plant relative growth rate (RGR) and nitrogen concentration. Some serious problems in the models suggested by the author are also indicated.
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Source :
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Annals of Botany - 0305-7364, vol. 75, n° 5
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