Terroir 1996 banner
IVES 9 IVES Conference Series 9 Optimisation de la fertilisation du Cot sur le Causse de l’Appellation d’Origine Contrôlée Cahors

Optimisation de la fertilisation du Cot sur le Causse de l’Appellation d’Origine Contrôlée Cahors

Abstract

L’aire d’Appellation d’Origine Contrôlée de Cahors (Lot) couvre une superficie de 21700 ha, répartis sur 45 communes, dont seulement 4300 sont plantés en vigne. Le cépage principal de cette A.O.C. est le Cot noir qui représente 70 % de l’encépagement, conférant ainsi leur typicité aux vins de cette région ; mais malgré cette importance, à notre connaissance, sa physiologie est restée assez peu étudiée.

Sur cette A.O.C. Cahors, traditionnellement on distingue le vignoble implanté sur le plateau calcaire : le Causse et celui de la vallée : terrasses alluviales du Lot et cônes d’éboulis. Nous avons choisi le Causse qui couvre 70 % de l’A.O.C., et correspond au quart environ de la superficie totale plantée en vigne. Sur différentes parcelles de ce terroir, nous avons réalisé un suivi sur plusieurs années par analyse de sols, de sous sols et par diagnostic foliaire. Les résultats d’analyse de limbes ont permis de déterminer, sur cette zone pédo-climatique homogène, des teneurs optimales en éléments minéraux pour ce cépage. Valeurs de référence permettant de pratiquer une fertilisation raisonnée qui est cependant à moduler en fonction des fluctuations climatiques interannuelles (Garcia et al. 1985).

DOI:

Publication date: March 25, 2022

Type: Poster

Issue: Terroir 1996

Authors

G. BRUN (1), M. GARCIA (1), F. DEDIEU (2), F. LAFFARGUE (3)

(1) Institut National Polytechnique. E.N.S.A.T.
145, Avenue de Muret, 31076 Toulouse cedex, France
(2) Faculté de Pharmacie
35, Chemin des Maraîchers, 31062 Toulouse cedex, France
(3) Maison du Vin de Cahors
B.P. 199, 46004 Cahors cedex, France

Tags

IVES Conference Series | Terroir 1996

Citation

Related articles…

Il Soave: esempio di cultura e di scienza

L’evoluzione del settore viti-enologico, supportato dalla ricerca ci propone sempre più frequentemente vini unici e inconfondibili. Il merito di ciò è da ricercare nel rapporto vitigno-territorio e dalla

Red wine substituted esters involved in fruity aromatic expression: an enantiomeric approach to understand their sensory impact and their pathway formation

Among red wines ethyl esters, those from short hydroxylated and branched-chain aliphatic acids constitute a family with a particular behavior and sensory importance. They have been previously discussed in the literature [1] and recent studies have established that some of them were strongly involved in of red wines’ fruity aroma [2]. As some among them have an asymmetrical carbon atom, it seemed important to separate their different enantiomers to obtain an accurate assessment of their organoleptic impact. Three chiral esters have been identified, presenting alkyl and/or hydroxyle substituants: ethyl 2-hydroxy-4-methylpentanoate, ethyl 2-methylbutanoate, and ethyl 3-hydroxybutanoate.

Il ruolo dei comuni nella gestione del territorio e nella tutela dei vitigni autoctoni di qualita’

Questo simposio organizzato dall ‘Associazione nazionale Città del Vino, che mi onoro di presiedere, è per me motivo di particolare soddisfazione perché porta a compimento parte di un percorso iniziato dall’associazione da alcuni anni e che ha un obiettivo apparentemente semplice: sollecitare gli amministratori delle Città del Vino a perseguire con tenacia, tal­volta anche con la necessaria caparbietà, programmi ed interventi che abbiano al centro, sempre, la qualità della vita dei loro territori.

Development and application of CRISPR/Cas in grapevine

The development and application of CRISPR (clustered regularly interspaced short palindromic repeats)/Cas (CRISPR-associated protein) technologies have revolutionized genome editing in plants due to its simplicity, high efficiency, and versatility. As an economically important fruit crop worldwide, grapevine genome editing using CRISPR/Cas technologies has also been reported these years. Here we introduce the development briefly of the most popular CRISPR/Cas9 system and also the state-of-the-art CRISPR technologies developed so far. Moreover, we summarize CRISPR/Cas9-mediated applications for gene functional study and trait improvement in grapevine.

Influence of thermal stress on Malbec, Syrah, and Bonarda (Vitis vinifera L.) anthocyanin content and evolution in growing seasons with heatwaves in semi-arid climate (Argentina)

It is known that high temperature influences the synthesis, transformation and degradation of grape anthocyanin (ANT) threatening the quality of grapes and coloured wines.