Scientific Opinion on a technical file submitted by the Japanese Authorities to support a derogation request from the EU import requirements for bonsai and topiary trees that are host plants of Anoplophora chinensis. | European Food Safety Authority Skip to main content

Scientific Opinion on a technical file submitted by the Japanese Authorities to support a derogation request from the EU import requirements for bonsai and topiary trees that are host plants of Anoplophora chinensis.

Metadata

Panel members at the time of adoption

Richard Baker, Thierry Candresse, Erzsébet Dormannsné Simon, Gianni Gilioli, Jean-Claude Grégoire, Michael John Jeger, Olia Evtimova Karadjova, Gábor Lövei, David Makowski, Charles Manceau, Maria Navajas, Angelo Porta Puglia, Trond Rafoss, Vittorio Rossi, Jan Schans, Gritta Schrader, Gregor Urek, Johan Coert van Lenteren, Irene Vloutoglou, Stephan Winter and Marina Zlotina

Abstract

Following a request from the European Commission, the EFSA Panel on Plant Health was asked to deliver a scientific opinion on a technical file submitted by the Japanese Authorities to support a derogation request from the EU import requirements for bonsai and topiary trees that are host plants of Anoplophora chinensis (Forster) (Coleoptera: Cerambycidae). Three options were proposed as alternatives to the existing requirements of the European Union: a) to reduce the required period to grow plants in field cages from two years to one season prior to export (from April to October); b) to allow grafting of scions with no risk of infestation by A. chinensis during the two years of field-cage cultivation and c) to remove the net from the field cage during the winter period (from November to March) when adult A. chinensis do not visit the area or lay eggs. The Panel evaluated the technical file and concluded that as the life cycle duration of the pest can be more than one season and larvae cannot be reliably detected within the plant, a reduction of the required growing period under complete physical protection increases the risk of entry into the EU compared with the current EU requirements. The Panel considered scions collected from a branch of a stock tree 50 cm or higher above the ground, with a diameter not exceeding 5 mm and a length of 5 cm, are unlikely to increase the risk of entry. The Panel also considered that, due to uncertainty on the occurrence of beetle flight and potential for oviposition between November and March, opening cages during this period may lead to an increased risk of entry into the EU compared to current measures.

Related topic(s)