Additional advisory report on the renewal of the authorisation for import and processing of genetically modified oilseed rape GT 73
Genetically modified oilseed rape GT73 is tolerant for glyphosate containing herbicides. In 2012 COGEM advised on an application concerning the import and processing of this oilseed rape event. In the view of COGEM, adaptation was necessary of the post-market environmental monitoring plan concerning this application.
In its recently issued Scientific Opinion, EFSA has not dealt with the concerns raised by COGEM. The applicant has not provided a new monitoring plan. Therefore, the objections of COGEM are still unimpaired.
Most importantly, COGEM advises to monitor on the presence of GT73 oilseed rape volunteers along oilseed rape distribution routes and transshipment areas. In the Netherlands small oilseed rape populations may occur in disturbed habitats along roadsides, railways and transshipment areas. The establishment of GT73 volunteers cannot be excluded, in particular if glyphosate is applied for weed control as is usual for railway beds. These volunteers may cross-fertilise other (genetically modified) volunteers, resulting in stacking of transgenic traits in one plant. It cannot be excluded that a possible combination of traits and/or a possible interaction between the transgenic products may result to a potentially adverse effect. In the view of COGEM, general surveillance is the instrument to identify these unexpected, potentially adverse environmental effects. Therefore, in the general surveillance plan monitoring of oilseed rape transport routes and transshipment areas should be included.