History of bacterial ring rot of potato in the Czech Lands and a proposal for relaxation of strict quarantine measures

• Published in: Plant protection science 2007-06, Vol.43 (2), p.35-46
• Main Author: Kudela, V.,Vyzkumny Ustav Rostlinne Vyroby, Prague (Czech Republic)
• Format: Article
• Language: English
• Subjects: bacterial ring rot; BACTERIOSE; BACTERIOSES; BACTERIOSIS; CLAVIBACTER MICHIGANENSIS; clavibacter michiganensis subsp. sepedonicus; CUARENTENA; CZECH REPUBLIC; Economic importance; ENFERMEDADES DE LAS PLANTAS; HISTOIRE; HISTORIA; HISTORY; http://www.fao.org/aos/agrovoc#c_13551; http://www.fao.org/aos/agrovoc#c_33095; http://www.fao.org/aos/agrovoc#c_33331; http://www.fao.org/aos/agrovoc#c_3635; http://www.fao.org/aos/agrovoc#c_4936; http://www.fao.org/aos/agrovoc#c_5962; http://www.fao.org/aos/agrovoc#c_6402; http://www.fao.org/aos/agrovoc#c_6667; http://www.fao.org/aos/agrovoc#c_6927; http://www.fao.org/aos/agrovoc#c_7221; http://www.fao.org/aos/agrovoc#c_7566; http://www.fao.org/aos/agrovoc#c_770; http://www.fao.org/aos/agrovoc#c_7998; incidence of occurrence; MALADIE DES PLANTES; MORBIDITE; MORBIDITY; MORBOSIDAD; PAPA; PLANT DISEASES; PODREDUMBRES; POMME DE TERRE; potato; POTATOES; POURRITURE; QUARANTAINE; QUARANTINE; quarantine measures; REPUBLICA CHECA; REPUBLIQUE TCHEQUE; Ring rot; ROTS; SEED; SEMENCE; SEMILLAS; SINTOMAS; SOLANUM TUBEROSUM; SYMPTOME; SYMPTOMS; TUBERCULE; TUBERCULO; TUBERS; Vegetables
• ISSN: 1212-2580; 1805-9341
• DOI: 10.17221/2254-PPS

In the supposed or proven incidence of bacterial ring rot caused by Clavibacter michiganensis subsp. sepedonicus (Cms) in certified seed and commercial potatoes, five periods can be identified in the Czech lands from 1910 to 2006: (i) high incidence of Cms in potato crops (about 1910-1929); (ii) very low incidence in certified potatoes and sporadic occurrence in commercial potatoes (about 1930-1985); (iii) increasing incidence of Cms in certified seed potatoes and its sporadic occurrence in commercial potatoes (about 1986-1997); (iv) a relatively high percentage of potato tuber samples infected by Cms, namely 1.14% in seed potatoes in 1998 and 4.13% in commercial potatoes in 1999 (1998-2004 period); (v) progressive decrease of Cms incidence to zero in seed potato samples and 0.19% in commercial samples in 2005, followed by a slight increase to 0.15% in seed potatoes and 0.23% in commercial potatoes in 2006 (2005-2006 period). Thus, up to 2006, Cms was not widely distributed in the CR. It is actively and effectively controlled, has a relatively low capacity for damage and can hardly be considered as a pest of national economic importance.