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Containing the spread of Orobanche to limit yield losses

August 17, 2018

Orobanche cumana is a parasitic sunflower plant, present in the majority of sunflower production areas in Europe. The impact of Orobanche on the crop is not to be underestimated because the loss of yield can reach up to 90% and there is a very strong capacity for dissemination.

Once the presence of the Orobanche Cumana is confirmed in the parcel, it is necessary to respect certain practices in order to limit the losses:

  • Choose a variety adapted to the risk, such as a variety with a genetic tolerance to the herbicide effective against this parasite;
  • Increase crop rotation to reduce the potential for multiplication of Orobanche;
  • Incorporate Orobanche cumana trap crops such as maize and sorghum;
  • Remove the inflorescences before the maturity of the Orobanche and put them in a plastic bag before removing them from the field to destroy them;
  • Harvest the infected plots last;
  • After the harvest, avoid grinding the canes, it is better to bury them in the first centimeters to limit the spread;
  • Clean the equipment after use including the tires of the vehicles to avoid contaminating another parcel;
  • Clean your boots when leaving a contaminated parcel.

To prevent the risk, downloading the OR Master application will evaluate the risk of finding Orobanche on your plot and choose a resistant variety to avoid spreading. Because choosing a genetically resistant variety is the best protection.