Répercussions d'une alimentation azotée ammoniacale sur le métabolisme carboné photosynthétique chez le soja (Glycine max L Merr)

Three solution experiments were performed to test the importance of NH versus NO +NH to growth of 23 wild-forest and open-land species, using field-relevant soil solution concentrations at pH 4.5. At N concentrations of 1-200 μM growth increased with increasing N supply in Carex pilulifera, Deschampsia flexuosa, Elymus caninus and Bromus benekenii. Geum urbanum was the most N demanding species and had little growth below 200 μM. The preference for NH or NO +NH was tested also at pH 4.0; no antagonism was found between NH and H, as indicated by similar relative growth in both of the N treatments at both pH levels. Growth in solution with NH relative to NO +NH , 200 μM, was negatively related to the mean pH of the field occurrence of the species tested; acid-tolerant species grew equally well with only NH as with NO +NH (Oxalis acetosella, Carex pilulifera, Festuca gigantea, Poa nemoralis, Deschampsia flexuosa, Stellaria holostea, Rumex acetosella), while species of less acid soils were favoured by NO +NH (Urtica dioica, Ficaria verna, Melandrium rubrum, Aegopodium podagraria, Geum urbanum, Bromus benekenii, Sanguisorba minor, Melica ciliata, Silene rupestris, Viscaria vulgaris, Plantago lanceolata). Intermediate species were Convallaria majalis, Elymus caninus, Hordelymus europaeus and Milium effusum. No antagonism between NH and Ca, Mg and K was indicated by the total uptake of the elements during the experiment.

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Interspecies differences in the preference of ammonium and nitrate in vascular plants

Falkengren‐Grerup¹

1995

Oecologia

126

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Importance of ammonium and nitrate to the performance of herb-layer species from deciduous forests in Southern Sweden

Falkengren‐Grerup¹,

Kristensen²

1994

Environmental and Experimental Botany

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Growing media and organic fertilizers affect microbial activities and nutrient availability in soilless horticulture

Paillat¹,

Guénon²,

Huché-Thélier³

et al. 2020

Acta Hortic.

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Répercussions d'une alimentation azotée ammoniacale sur le métabolisme carboné photosynthétique chez le soja (Glycine max L Merr)

Cited by 3 publications

References 12 publications

Interspecies differences in the preference of ammonium and nitrate in vascular plants

Interspecies differences in the preference of ammonium and nitrate in vascular plants

Importance of ammonium and nitrate to the performance of herb-layer species from deciduous forests in Southern Sweden

Growing media and organic fertilizers affect microbial activities and nutrient availability in soilless horticulture

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