Plant diseases 2

• What should you be able to describe by the end of the video?

  How to diagnose diseases in plants
• What are plant ion deficiency diseases?

  Diseases not caused by pathogens
• What causes Rose black spot?

  A fungus
• How do insects affect plants?

  They extract nutrients, stunting growth
• Why are insects not considered pathogens?

  They do not cause infectious diseases
• What can insects carry that affects plants?

  Pathogens such as viruses
• What are some symptoms of plant diseases?

  Discoloration, stunted growth, decay
• How can we diagnose plant diseases?

  Using manuals, labs, or testing kits
• What is one method to identify pathogens in plants?

  Taking the plant to a lab
• What do testing kits for plant diseases contain?

  Clonal antibodies
• What ion deficiency causes stunted growth in plants?

  A lack of nitrate ion
• Why is nitrate important for plants?

  It is needed for protein synthesis
• What condition does a lack of magnesium ion cause?

  Chlorosis
• What is magnesium required for in plants?

  To make chlorophyll
• What happens to leaves in chlorosis?

  They lose their green coloration
• What are the main ways to diagnose plant diseases?

  • Use a garden manual or website
  • Take the plant to a lab
  • Use testing kits with clonal antibodies
• What are the symptoms of plant diseases?

  • Discoloration of leaves
  • Stunted growth
  • Decay or rot
  • Malformed stems or leaves