Identify common greenhouse pests.

Identification should include

• identification of insect and animal pests and damage, including aphids, fungus gnats, mealybugs, mites, scale insects, thrips, and whiteflies
• identification of plant diseases and symptoms, including viruses, bacteria, and fungi (botrytis, damping-off, and root rot)
• identification of weeds and the economic damage caused by them.

Process/Skill Questions:

• What are the five basic pest groups?
• What pathogens cause the most diseases in plants?
• What sort of symptoms do viral plant diseases cause?