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Plant cover in vineyards

Ana Sagüés

EVENA. Plant Health and Production Section. Government of Navarre

For 10 years, the effect of live plant cover on production parameters, analytical parameters in must and harvest quality has been studied for the Tempranillo red wine variety.

Two species of grasses were used, as well as two different distributions of ground cover (on both sides of a CT row or only one side of a CP row), and compared with a tilled control.

The plant cover was found to limit the production and vigor of the vines, with this effect increasing with the extension of cover. We observed higher probable alcohol content, lower total acidity and lower malic acid levels in musts. Color parameters were enhanced and the harvest was healthier overall.

From a management standpoint, the use of cover was considered to be useful for balancing vine vigor and yield, thus improving the quality of the harvest.

For the white wine variety Chardonnay, the effect of cover on agronomic parameters was not as sizeable, although the trends were similar to those observed for Tempranillo.

The greatest impact was observed on the must parameters. The use of plant cover with white wine varieties reduces the nitrogen content of the must, leading to a drop in easily assimilated nitrogen and amino acids that is inversely proportional to the amountof cover planted, and altering the fermentation kinetics.

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In accordance with the Organic Law on the Protection of Personal Data 15/1999, of 13 December, Promotora de Exportaciones Catalanas SA (hereinafter PRODECA), whose address is Gran Via de les Corts Catalanes, 620, principal, 08007 Barcelona, with tax reg. no. NIF A58241316, declares that the images contained on the website www.smartfruitcongress.cat are included in a file belonging to PRODECA. The purpose of this file is the promotion, via its website, of the activities conducted by PRODECA – SmartfFruit IPM International Congress.

PRODECA guarantees that you may, at any time, exercise your right to access, rectify, cancel or oppose by writing to the aforesaid postal address, using the reference "PROTECCIÓN DE DATOS - SMARTFRUIT", or to the email address smartfruitcongress@smartfruitcongress.cat.

Specifically, to correctly exercise these rights you must clearly provide the following items in that communication:
- Name, surname(s) and photocopy of National Identity Document or Passport.
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PRODECA also declares that it reserves the right to delete from its website any content that it considers violates current and applicable legislation.

D’acord amb l’article 17.1 de la Llei 19/2014, la ©Generalitat de Catalunya permet la reutilització dels continguts i de les dades sempre que se'n citi la font i la data d'actualització i que no es desnaturalitzi la informació (article 8 de la Llei 37/2007) i també que no es contradigui amb una llicència específica.