PM 7/40 (5)<i>Globodera rostochiensis</i>and<i>Globodera pallida</i>
Unknown authors
Abstract
| DET EC T ION | SymptomsAbove ground symptoms due to PCNs are not specific and often go undetected.General symptoms include patches of poor growth in the crop, with plants some times showing yellowing, wilting or death of foliage; tuber size is reduced and roots are extensively branched with soil stuck to them.However, there are many other causes of these symptoms.Plants should therefore be lifted for a visual check for the presence of cysts and young females on the roots, or a soil sample should be taken for testing.Young females and cysts are just visible 1 Use of brand names of chemicals or equipment in these EPPO Standards implies no approval of them to the exclusion of others that may also be suitable. 2http://www.eppo.int/QUARANTINE/ diag_activ ities/ EPPO_TD_1056_Gloss ary.pdf.