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CropMonitor > Winter Wheat > Encyclopaedia > Fusarium Head Blight > Monitoring: Incidence 1998  


Incidence of FHB pathogens (1998)
 
In 1998 the national winter wheat disease survey carried out at CSL indicated the highest incidence of FHB since our records started in 1986. A Defra/HGCA funded project (HGCA project report No. 207) was carried out to investigate the epidemic.

Farms included in the survey were selected from the winter wheat disease survey where disease levels were assessed at greater than 30% of plants infected. Grain collected from each farm was analysed for FHB pathogens and trichothecene mycotoxins present.
 
Predominant FHB pathogens detected during 1998 survey
The FHB pathogens present in each sample were determined by PCR analysis (carried out at the John Innes Centre).
  • The predominant ear blight pathogen was Microdochium nivale var. majus, present in 94% of the samples collected

  • No M. nivale var. nivale was detected in any of the samples.

  • F. avenaceum, F. culmorum and F. poae were present in 43%, 21% and 34% of the samples respectively.

  • F. graminearum was present in 40% of samples
 
 
 
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