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Istituto Agronomico Mediterraneo di Bari (IAMB) 2005

Advanced control strategies against grapevine Powdery and Downy Mildew in the Mediterranean organic vineyard

Yildiz, Levent

Titre : Advanced control strategies against grapevine Powdery and Downy Mildew in the Mediterranean organic vineyard

Auteur : Yildiz, Levent

Etablissement de soutenance : Istituto Agronomico Mediterraneo di Bari (IAMB)

Grade : Master of Science : Mediterranean organic agriculture 2005

Résumé
The most destructive and widespread grapevine diseases are powdery (PM) and downy mildew (DM). The purpose of this thesis was to evaluate the efficacy of strategies that include alternatives to copper and sulphur in Mediterranean organic vineyards. Ampelomyces quisqualis (AQ10), a PM mycoparasite, and Myco-Sin, which is effective against DM, were used. In 2005 weather conditions were more conducive to PM than to DM. All the used strategies gave a good protection against PM, compared to the untreated control. The strategies based on the use of sulphur and Mycosin did not differ from the Farm Standard strategy, based on sulphur and copper. AQ10 provided moderate control on the leaves compared to the untreated ; however the efficacy on bunches was far from the expectations. Using strategies integrating alternative products, a reduction in the use of copper and sulphur can be obtained, but further studies are necessary to optimize the timing of treatments.

Mots-clés : BIOLOGICAL CONTROL ; CLIMATIC FACTORS ; GRAPEVINES ; MEDITERRANEAN REGION ; ORGANIC AGRICULTURE ; VINEYARDS

Présentation

Page publiée le 24 février 2018, mise à jour le 12 septembre 2018