Identify abiotic and biotic factors influencing plant growth and development.

Identification should include

• abiotic factors (noninfectious)
  • temperature
  • water
  • light
  • nutrients
  • pollutants
  • pH
  • chemical contaminants
• biotic factors (infectious)
  • eukaryotes
  • prokaryotes
  • parasitic higher plants
  • viruses/viroids
  • nematodes
  • protozoa.

Process/Skill Questions:

• What are common plant viruses that affect Virginia agriculture?
• What are common plant fungal infections that affect Virginia agriculture?
• What are common plant bacterial infections that affect Virginia agriculture?
• What are the stages of plant disease development?
• What are some examples of abiotic disorders?