Global: La enfermedad Dickeya Blackleg pone en entredicho la certificación de semillas en Europa.
Dickeya can cut yields by 20–25% or more; seed buyers demand documented freedom, and Scotland and Northern Ireland apply zero tolerance in certification.
Dickeya blackleg has become the defining seed-health issue of European potato production: yield losses of 20–25% or more have been reported in Europe, symptoms tend to develop above 25°C, and Scotland and Northern Ireland apply zero tolerance in seed certification.
Unlike its older relative Pectobacterium, Dickeya causes severe damage at low contamination levels and spreads efficiently through seed-cutting and handling, making clean starting material the only reliable defense.
Seed buyers have absorbed the lesson: documented freedom from Dickeya, verified by laboratory testing rather than field inspection alone, is now a standard commercial requirement in professional contracts.
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Control on farm is hygiene discipline: sanitized cutting equipment, careful grading to remove suspect tubers, and irrigation management that avoids the waterlogged conditions in which blackleg explodes.
Researchers continue working on resistance, but tolerant varieties remain scarce; for the foreseeable future, the sector’s protection rests on certified clean seed and rigorous handling from mini-tuber to field.
Prevención y control · Nota editorial
Dickeya blackleg (Dickeya spp.): lo que los cultivadores pueden hacer
- Prevención: plant certified seed with documented freedom from Dickeya; sanitize cutting and handling equipment; avoid waterlogged fields.
- Monitoreo: inspect crops during warm periods — damage peaks above 25°C; send suspect lots for laboratory testing.
- Chemical protection in your country: no curative products exist; copper-based products offer at most limited suppression — check the national register of your country.
- Gestión de la resistencia: tolerant varieties are not yet widely available; protection rests on clean seed and hygiene.
Esta nota, proporcionada por el equipo editorial de potatoes.news, tiene fines meramente informativos. No constituye una recomendación de ninguna empresa y su uso no es obligatorio. Utilice únicamente productos fitosanitarios autorizados en su país y siga las instrucciones de la etiqueta. Los nombres y registros de los productos varían según el país; consulte a un agrónomo local.
Fuentes: Spud Smart, 2016; DAERA Northern Ireland; Toth et al., Plant Pathology, 2011
