LOOK FOR

Look for in shoots
• Dead tips on shortened shoots with a bluish hue.
• Shoots that remain rubbery and may develop small (< 1 mm) raised black pustules near the base
  
  Look for in leaves
• Yellow patches on downward curled leaves that overlap each other and fall prematurely
  
  Look for in bunches
• Bunches that shrivel and die from flowering onward. On Chardonnay, individual berries tend to shrivel
  

   CONDITIONS

• More prevalent in warm inland regions on Chardonnay and Riesling
• Monitor for Australian Grapevine Yellows (AGY) from flowering to berry softening.
  

   NOTES

Symptoms usually develop on single or adjacent shoots, on one or more arms of a vine. Symproms should be present on leaves, shoots and bunches before AGY is suspected.
AGY can be confirmed by laboratory testing.