Napier Grass Stunt ► How to tell the difference
The contrast between unaffec...
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Napier grass stunt: how to tell the difference

A poster prepared by Eric Boa and Phil Jones showing the difference between unaffected and diseased Napier grass, 2005
Published on: Mar 3, 2016
Published in: Technology      
Source: www.slideshare.net


Transcripts - Napier grass stunt: how to tell the difference

  • 1. Napier Grass Stunt ► How to tell the difference The contrast between unaffected and diseased plant parts is very important in field diagnosis. Left: the unaffected, sturdy shoot is greener than the yellow, thin diseased shoots either side. Right: the vigorous young shoots are more robust than the weedy shoots that proliferate at the base of diseased clumps. Contrast bottom left, diseased, with bottom right, unaffected. Below: Differences exist between the yellow leaves on the right and the unaffected, green leaves, though they are both similar in size and form. We say ‘unaffected’ rather than ‘healthy’ since the phytoplasma can be present without any symptom expression. Red triangle: diseased. White triangle: unaffected. We gratefully acknowledge the assistance of Namulonge Research Institute, Uganda in obtaining these photographs. Napier grass is also known as elephant grass. TEXT: Eric Boa and Phil Jones. PHOTOS: Eric Boa. GLOBAL PLANT CLINIC [www.globalplantclinic.org] 6 July 2005

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