Oilseed rape and beets

1
Oilseed rape and beets

• Frédérique Angevin
• Detlef Bartsch

2
Oilseed rape New findings - results

• Preliminary results about biological containment
  strategy
• Quantification of risk of contamination by
  combine
• Modelling the importance of seed bank in the
  persistence of feral populations implication
  for management
• Gene flow study on large scale role of insects
  (/ wind dispersal) / fertility and scaling
  effects

3
Beet New findings - results

• Seed production isolation distances and
  rotations
• Crop production bolter control
• Still limited data on the complete life-cycle
• Modelling is on the way
• Experience of segregation in existing seed
  production

4
Rapeseed beetPoints of discussion

• Effect of field size and distances on dispersal
• Influence of feral and volunteer populations on
  contamination of conventional harvest
• Bolter/groundkeeper management

5
Summary conclusion

• Two complicated crops (time/space)
• Coexistence in beet seems more feasible than in
  oilseed rape
• Research needed long-distance dispersal and
  landscape approach
• Quantification of risk of contamination by
  machinery
• .