PM 3/089 (1) Control of volunteer potato plants

Specific scope This Standard describes the phytosanitary risks posed to potato by the introduction of potentially infested soil onto land that will be used to grow a potato crop. Such soil can result from the grading, packaging and processing of potato tubers and may contain tubers and other potato plant debris. It can also be soil associated with other harvested root crops, which have been grown on land that has previously been used to grow potato. This Standard provides recommendations to NPPOs to set rules for the return of soil to agricultural fields and to authorize its safe/appropriate treatment and disposal, based on a risk assessment carried out by the handling facilities. It also provides guidance for operators (growers and industry) to minimize the phytosanitary risks associated with soil along the whole production chain, from growing the crop to final packaging or processing. The risk posed by soil associated with plants for planting (including seed potatoes) and the case of soil known to be infested by a specific regulated pest are not covered by this Standard. Specific approval and amendment First approved in 2021–09. Authors and contributors are given in the Acknowledgements section.

PM 3/93 (1) Management of phytosanitary risks for potato crops resulting from movement of soil associated with root crops and potatoes

2021

PM 9/2 (3) Clavibacter sepedonicus

2023

Specific scope: This Standard describes a national regulatory control system for Clavibacter sepedonicus that provides guidance on surveillance for the pest and its containment and eradication if found. Specific approval and amendment: First approved in 2003-09. Revisions approved in 2011-09 and in 2023-09. Authors and contributors are given in the Acknowledgements section. | I N T RODUC T IONClavibacter sepedonicus, which causes bacterial ring rot of potato, is an A2 pest for EPPO. It has a restricted distribution, being found mainly in the north and east of the EPPO region. This reflects its biology, since persistence of the disease is favoured by cool moist conditions. Prevention of further spread of the pest within the region is achieved primarily by international phytosanitary measures and the operation of certification schemes for seed potato. If a country can demonstrate that it is a pest-free area, or can establish pest-free areas within its territory, potato plants from these areas will not be subject to the ring-rot restrictions, which otherwise apply. Requirements for establishing pest-free areas are described in EPPO Standard PM 3/61 (EPPO, 2019). EPPO Standard PM 8/1 on commodity-specific phytosanitary measures specifies requirements for commodities of potatoes with respect to C. sepedonicus (EPPO, 2017). The present Standard presents the basis of a national regulatory control system for the surveillance, containment and eradication of C. sepedonicus.

PM 9/3 (3) Ralstonia solanacearum

2023

Specific scope: This Standard describes a national regulatory control system for Ralstonia solanacearum that provides guidance on surveillance for the pest and its containment and eradication if found. Specific approval and amendment: First approved in 2003-09. Revisions approved in 2011-09 and in 2023-09. Authors and contributors are given in the Acknowledgements section. | I N T RODUC T IONRalstonia solanacearum has been described as distributing into four Phylotypes in a species complex (Prior & Fegan, 2005), and was reclassified by Safni et al. ( 2014) into three distinct species: R. solanacearum (Phylotype II), Ralstonia pseudosolanacearum (Phylotype I and III) and Ralstonia syzygii (Phylotype IV; EPPO, 2022a). Strains affecting potato are found in all phylotypes. This Standard applies to R. solanacearum (Phylotype II), which is the only species established in the EPPO Region (an EPPO A2 pest), where it causes brown rot of potato and bacterial wilt of tomato. However, the measures described in this Standard may also be applied to other species in the Ralstonia solanacearum species complex (RSSC), in particular R. pseudosolanacearum. Prevention of spread of the pest within the region is achieved mainly by international phytosanitary measures and the operation of certification schemes for seed potato. If a country can demonstrate that it is a pest-free area, or can establish pest-free areas within its territory, potatoes and host plants from these areas will not be subject to the restrictions which otherwise apply. Requirements for establishing pest-free areas are described in EPPO Standard PM 3/61 (EPPO, 2019). EPPO Standard PM 8/1 on commodity-specific phytosanitary measures specifies requirements for commodities of potatoes with respect to R. solanacearum (EPPO, 2017). The present Standard presents the basis of a national regulatory control system for the surveillance, containment and eradication of R. solanacearum with a focus on potato and tomato production systems.