[DE] Field trials confirm: isolation distance of 20 metres sufficient for co-existence

Scientists from the Martin-Luther-University Halle-Wittenberg (Germany) have published detailed results from co-existence research in the recent issue of Journal of Agronomy and Crop Science. In the cultivation season of 2004, researchers studied 30 sites of a pre-commercial cultivation of GM maize MON810 with varying parameters.

The research results in short:

None of the samples collected at more than ten metres from the GM maize field showed GM content above the labelling threshold of 0.9 percent. To maintain out-crossing below 0.9 percent, the paper proposes the planting of pollen barriers consisting of 20 metres of conventional maize.

This recommendation was already accepted by GM seed producers in Germany as soon as the experiments had been evaluated in 2005.

  • Prof. Dr. W. E. Weber
    Martin-Luther-University of Halle-Wittenberg, Institute of Plant Breeding and Plant Protection
    D-06099 Halle, Germany
    Email: eberhard.weber@landw.uni-halle.de