LOOK FOR

Look for in leaves
• Leaves with irregular green-yellow speckles up to 2 mm across, which turn yellow to white later in the season
• Symptoms on 2-3 exposed mature leaves per vine and rarely on more than 20 leaves
• Speckles that may be isolated or clumped along main veins and veinlets
  

   CONDITIONS

• More obvious in hot summers and on exposed basal leaves
• Yellow speckle viroid shows bright symptoms in springs that follow warm winters. Sultana is the most affected variety.
  

   NOTES

Sometimes symptoms show on only a few leaves. These are hard to find in most years.
Late season colour is pale yellow to light green.