TERMIUM Plus®

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ASSIMILATION AZOTE [3 records]

Record 1 2012-01-18

English

Subject field(s)
  • Water Treatment (Water Supply)
CONT

... nitrogen ... is only partially assimilated the first year ... The annual assimilation rate then decreases.

French

Domaine(s)
  • Traitement des eaux
CONT

[...] l'azote, par exemple, n’ est assimilable qu'en partie la première année [...] Les taux d’assimilation annuelle vont ensuite en décroissant.

Spanish

Save record 1

Record 2 2010-06-09

English

Subject field(s)
  • Plant Biology
  • Grain Growing
CONT

Grain filling, the stage of development during which dry matter is deposited in the grain, is initiated shortly after anthesis. The amount of dry matter deposited into the grain is influenced by both the rate and duration of grain filling, which in turn can be influenced by both genotype and environment.

CONT

Under favourable grain filling conditions, there is less variation in grain size than in other yield components ... as mobilisation of stem reserves and nitrogen can maintain grain filling under mild terminal stresses.

French

Domaine(s)
  • Biologie végétale
  • Culture des céréales
DEF

Stade de développement des céréales.

CONT

Le travail de recherche de l'équipe est principalement axé sur l'étude de la régulation de l'assimilation et de la gestion de l'azote, de la phase végétative au remplissage du grain.

OBS

remplissage du grain : terme extrait du Glossaire de l’agriculture anglais/français et reproduit avec l’autorisation de l’OCDE.

Spanish

Campo(s) temático(s)
  • Biología vegetal
  • Cultivo de cereales
Save record 2

Record 3 1985-09-13

English

Subject field(s)
  • Plant Biology
  • Environmental Studies and Analyses
CONT

Biological phosphorus removal is dependant mainly on manipulation of the ability of Acinetobacter sp.. to release phosphate in anaerobic conditions and absorb it in aerobic ones. ... The ortho-phosphate is metabolised by the cell and excess quantities are stored inside the cell as polyphosphate. This is called LUXURY UPTAKE of phosphate.

CONT

Biological phosphorus removal is based on the phenomenon called "luxury uptake." This effect is observed when certain microorganisms, primarily acinetobacter, are subject to anaerobic conditions, followed by aerobic conditions. Under anaerobic conditions, acinetobacter experience a stress due to a lack of oxygen. They release phosphorus and take on soluble COD. In the subsequent aerobic zone, the same microbes take on additional phosphorus to replenish the energy resources. In what may be interpreted as a "preventive measure," the microbes take on 2.5 times more phosphorus than required for biosynthesis. The microbes effectively prepare themselves for future stress situations (i.e., low O2 concentrations) by storing more-than-normal amounts of phosphorus in the form of polyphosphates as an energy source.

French

Domaine(s)
  • Biologie végétale
  • Études et analyses environnementales
DEF

Assimilation par les algues de quantités d’azote supérieures à leurs besoins.

CONT

[...] aucun effet sur le rendement en biomasse des macrophytes ne s’est produit lorsque la teneur tissulaire en azote a dépassé les exigences critiques en matière d’azote nutritif (appelées consommation de luxe) [...]

CONT

[...] la composition du végétal aquatique varie selon les espèces et selon les conditions de milieu, notamment les conditions nutritives : si l’élément est en excès il y a «consommation de luxe», ce qui permet de constituer des réserves, si l’élément vient à manquer la concentration cellulaire tombe au «quota minimal de subsistance» en dessous duquel la croissance est impossible. La frontière entre les deux domaines de carence n’est donc pas précise et correspond plus à un «no man’s land» compris entre 7 et 10 qu’à une ligne de démarcation située à 8,75 : l’azote ou le phosphore est facteur limitant dans un milieu nutritif selon que N/P [azote/phosphore] y est <7 ou >10.

Spanish

Save record 3

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