Plant diseases

Plant diseases

1. Blight

   • Symptoms
     • Widespread death of tissue
     • Wlting
     • Brown patches
   • Causes
     • Infection via microorganisms

2. Canker

   • symptoms
     • Sunken neurotic lesion
       • Often on
         • Main stem
         • Branch
         • Root
   • Caused by
     • Variety of pathogens

3. Damping off

   • Symptoms
     • Collapse and rot of seedling
   • Causes
     • fungal infection

4. Dieback

   • Symptoms
     • Twig and branch death
     • Partial defoliation
     • Death
   • Causes
     • Mould
       • 'Phytophthora cinnamomi'

5. Gall

   • Symptoms
     • Abnormal growth
     • Swelling
   • causes
     • Pathogenic invasion

6. Mosaic

   • Symptoms
     • Patches of green colour

7. Powdery Mildew

   • Symptoms
     • White powdery 'bloom'
       • On plant Surface
   • caused by
     • Powdery mildew fungus

8. Rust

   • Symptoms
     • rust coloured pustules
   • causes
     • rust fungi

9. Rot

   • Symptoms
     • Disintegration of tissue
     • Causes
       • Pathogens
         • toxins
         • Enzymes