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Chapter Three
Hungry Planet: Stories of Plant Diseases

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 C3.1. Coffea arabica berries.
  C3.2. Urediniospores of the coffee rust fungus produced on lower leaf surface.

C3.3. Symptoms and signs of coffee rust. Note that some infected leaves have dropped off leaving bare areas on branches. Coffee rust disease cycle.


Coffea arabica (left) defoliated by coffee rust, compared to a resistant hybrid of C. arabica and C. canephora (right)..   H. Marshall Ward, who was sent to Ceylon (now Sri Lanka) by the British government to save the coffee plantations from the rust epidemic

C3.4. A rubber plantation in the Philippines.   C3.5. Tapping rubber.
C3.6. Symptoms of South American leaf blight of rubber.  

Disease cycle of South American leaf blight.


C3.7. The U.S. Department of Agriculture’s “Beagle Brigade.” Beagles are trained to help detect illegal fruits and vegetables at ports of entry.  C3.8. This magnet from the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) reminds travelers not to bring in potentially harmful pests.