Research published in Plant Disease
The results of the NEIKER-Tecnalia and INRA research were published last July in the prestigious scientific journal Plant Disease, which shows one of the highest impact factors in this discipline. The study was financed by the Aquitaine-Euskadi euro-regional platform, with the collaboration of grape growers in the Famers Union of Araba/lava (UAGA)
Widespread throughout Europe
The esca disease is widespread throughout Europe. In order to understand its importance, it can be stated that 70% of French vineyards showed symptoms of esca/BDA during the 2003-2008 period, according to nationwide survey data. The affected vineyards had between 1% and 3% diseased plants, a very similar percentage to the one found in Rioja Alavesa.
To control this disease, sodium arsenite has been traditionally used, a chemical banned since 2003 given its extreme toxicity. Although there exist several alternative treatments on the market, they are not as effective against the fungi as the mentioned sodium arsenite. NEIKER-Tecnalia is currently testing chemical and biological treatments intended to be used on pruning wounds, which are the entry point for this disease.
Esca is a complex disease involving a succession of several fungi and affecting grapevine and other woody plants. It is one of the so-called grapevine trunk diseases since the fungi causing them grow within the wood of the trunk and branches. As the wood decays, from the inside towards the outside, the vascular tissues become affected and the normal flow of sap is impaired, to such an extent of inducing partial drying of leaves or even total wilting of canes.
|Contact: Aitziber Lasa Iglesias|