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Managing diseases caused by plant parasitic nematodes in protected horticultural crops

Miguel Talavera

IFAPA

The 38,000 ha of protected horticultural production in Almería and the 7,000 ha of strawberry production in Huelva constitute two of the largest protected crop areas in Europe. These plastic-protected crops afford optimum conditions for the multiplication of root-knot nematodes (Meloidogyne spp.) and therefore onset of the disease associated with them, owing to the susceptibility of most crops, intensified production cycles and the accumulation of high temperatures inside greenhouses. 
The prevalence of diseases caused by Meloidogyne in these crops was estimated from soil and plant samples taken from the field as well as a survey among technical supervisors on holdings. In the Almeria area, 22% of fields were estimated to have Meloidogyne infestation, and losses of around 30% were attributed to it, with an increased incidence in the last five years.
The presentation will review the legal framework, advantages and constraints, and current use of the methods currently available to control the disease caused by Meloidogyne spp. It will also report the results of comparative efficacy trials on reducing populations of plant parasitic nematodes in micro-plots on experimental farms infested with M. incognita, M. hapla and Pratylenchus penetrans, where the soil was disinfested with various chemical, physical or biological treatments for ten consecutive years. Treatment with agrochemical soil fumigants was found to be the most effective in reducing nematode densities, followed by treatment with non-fumigant nematicides combined with solarisation. Biosolarisation treatments reduced the final levels of nematodes to levels similar to disinfestation with non-fumigant nematicides.

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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.
- 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.