RAPID ACCESS TO THE LATEST REGIONAL CROP PEST AND DISEASE LEVELS 		HGCA logo
CropMonitor > Potatoes > National Surveys > Seed Tuber Disease Levels  


Seed tuber disease levels 1999/2000
 
Before planting, fifty tubers from each seed stock were assessed for internal and external diseases and blemishes. Seed tuber assessments were first undertaken in 1996.
 
  • Incidence and severity of tuber surface diseases were at similar levels to those found in 1999.
  • Silver scurf was again the most severe and common of tuber surface diseases, being recorded on 99% of all stocks assessed. Internal rust spot was the most common internal blemish.
  • As in 1999, tuber blight was not recorded in seed stocks.
  • As in 1998 and 1999, skin spot was recorded in all regions except the South East.
  • Powdery scab was not recorded on crops in the South West % Wales and was highest in the South East where 50% of stocks were affected. Severity of powdery scab was only 0.1% surface area affected.


Incidence of potato surface disease - % stocks affected



Incidence of potato internal disease - % stocks affected



Incidence of potato surface disease - % surface area affected



Incidence of potato internal disease - % tubers affected



Regional incidence of potato surface disease - % stocks affected



Regional incidence of potato internal disease - % stocks affected

 
Defra Logo delivered to the industry by HGCA
This website was last updated on: 13/05/2008     © Crown Copyright Central Science Laboratory 2007
CSL Logo
All risk predictions published by CropMonitor are provided in good faith and are NOT a substitute for rigorous fieldwalking in combination with advice from BASIS qualified persons. CropMonitor accepts no liability for crop loss or damage resulting from the use of CropMonitor.