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Venturia spp. in environmentally-friendly apple and pear orchards: from epidemiology toward disease management

Imre J. Holb

Centre for Agricultural Sciences and Engineering, University of Debrecen, H-4015 Debrecen, P. O. Box 36.Hungary holbimre@gmail.com

Interest has turned from conventional to environmentally-friendly (integrated and organic) fruit production, where management practices differ from those in conventional production. Synthetic products are banned in organic fruit production e.g. in plant protection and nutrient supply, only natural products are permitted according to IFOAM standards. As a result, disease control is less effective than in conventional production with the consequence that epidemics are likely to be more serious in such a system.
This lecture will provide current management options against Venturia spp., the key fungal diseases of apple and pear fruit, in the growing season. This lecture will focus on management practices against apple and pear scab. This will include e.g. epidemic features of apple scab in integrated and organic apple orchards, a risk of early scab epidemics initiated by sexual and asexual forms of fungi in organic apple orchards, possible control strategies of inoculum sources in integrated and organic production systems, efficacy and phytotoxicity of approved fungicidal products and appropriateness of various sanitation practices in apple and pear production as well as the role of resistant vs. susceptible cultivars in disease epidemiology and management of pome fruit orchards.
Based on above examples, a theoretical and practical decisionmaking approach and future trends in scab management will be provided for integrated and organic orchards based on mechanical, agro-technical, biological and chemical control options.

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Data protection policy

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.
- Statement of the purpose of the request.
- Address for notification purposes.
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.