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Chemical Activators of Disease Resistance

  1. Theodor Staub,
  2. Walter Kunz,
  3. Michael Oostendorp

Published Online: 15 APR 2003

DOI: 10.1002/047126363X.agr100

Encyclopedia of Agrochemicals

Encyclopedia of Agrochemicals

How to Cite

Staub, T., Kunz, W. and Oostendorp, M. 2003. Chemical Activators of Disease Resistance. Encyclopedia of Agrochemicals. .

Author Information

  1. Syngenta Crop Protection AG, Basel, Switzerland

Publication History

  1. Published Online: 15 APR 2003


Chemical activation of disease resistance in plants represents an additional option for growers to protect their crops from losses due to plant diseases. Against some pathogens, like bacteria and viruses, resistance activators may be the best chemical option where genetic resistance is not available or not sufficient. Against dynamic fungal pathogens with a history of adaptation to fungicides or to resistant cultivars, the integration of chemical activators of broad-spectrum plant defenses with genetic resistance and fungicides is likely to prevent or slow such pathogen shifts. The challenge is to integrate optimally on each crop the new chemical activators of broad-spectrum plant defense with all other disease control and crop production methods to achieve more sustainable crop health management systems.


  • chemical activators;
  • pathogen;
  • broad-spectrum plant defense;
  • crop production;
  • probenazole;
  • isonicotinic acid;
  • benzothiadiazoles;
  • systemic acquired resistance