Signs and symptoms of TPP

Check your crops for signs of TPP. This is the most reliable way to detect TPP.  

If you grow a crop that is a host for TPP, look for insect life stages on the underside of leaves and signs of leaf damage. Signs and symptoms of TPP include:

  • Adult psyllids jumping from foliage when disturbed
  • Stunting and yellowing of growth tips
  • Yellowing or purpling of leaf margins
  • Severe wilting of plants caused by high numbers of psyllids feeding.
  • ‘Psyllid sugars’ – white sugar-like granules excreted by adults and nymphs, which coats leaves and stems, and leads to growth of sooty mould.
  • Stem death symptoms are similar to other potato and tomato disorders.

 

Tomato potato psyllid adults and nymphs on a tomato leaf
Check for the tomato potato pysllid on the underside of leaves. The more mature adults are darker in colour. Nymphs are 2 mm long, oval shaped, flattened and scale-like in appearance. Psyllid eggs are less than 1 mm long and are white when first laid, then turn yellow to orange after a few hours.

Inspecting the underside of the leaf for tomato potato pysllid
Check for the tomato potato pysllid on the underside of the leaf.

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Symptoms of Tomato potato psyllid infestation include yellowing of leaf margins and upward curling of the leaves.

Tomato potato psyllid, Bactericera cockerelli, comparison with five cent coin.
Tomato potato psyllid, Bactericera cockerelli, comparison with five cent coin.
Page last updated: Thursday, 16 November 2017 - 10:04am