etude écologique des conditions de manifestation de la chlorose ferrique dans le vignoble de la moyenne vallée de la loire *

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ID: 253316
1979
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Abstract
Dans la région viticole du Val de Loire le potentiel chlorosant des différentes formations géologiques calcaires est très variable. Il apparaît très lié à la quantité de fer extractible à l'oxalate d'ammonium qui est importante sur certains substrats glauconieux. Les conditions de profil pédologique (degré d'évolution de la lixiviation et de l'accumulation de CaCO3) permettent, en relation avec les caractéristiques climatiques, d'expliquer les phénomènes de chlorose ferrique d'année ou de période sèche. +++ ln the viticultural region of the Loire Valley the chlorosing potential of the different geological calcareous formations varies greatly. It appears to be closely linked to the quantity of iron extractible with oxalate of ammonium which is important on certain glauconitic substrata. The pedological profile conditions (degree of evolution of lixiviation and accumulation of CaCO3), in relation with the climatic characteristics, allows the phenomena of ferric chlorosis in a year or during a dry period to be explained.   * Communication faite au Symposium International d'Ecologie Viticole, Constantza. Roumanie, 27-29 septembre 1978.
Reference Key
dupont1979oenoetude Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;J. Dupont;René Morlat;Jean Salette
Journal meta gene
Year 1979
DOI
10.20870/oeno-one.1979.13.3.1404
URL
https://oeno-one.eu/article/view/1404
Keywords
region iron ferric chlorosisagriculturebotany

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