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Unformatted text preview: A plant that is predisposed will be less able to resist an infection. 3. Briefly describe 4 ways that plant diseases impact plant production and/or affect you (2 pts). When plant disease destroys crops it can cause a food shortage which means higher prices. Some diseases can make edible plants poisonous to humans. Diseases in turf can mean higher levels of chemicals being used which can contaminate the environment. Plant diseases can cause a plants aesthetic values to be decreased. 4. List the four steps in Kochs Postulates (be as complete as possible in describing each step)? What animal disease was Koch working with when he developed these rules of proof? (2 pts) 1. Establish a continual association of a diseased plant with a pathogen. 2. Separate the pathogen into a sterile culture. 3. Inoculate a plant of the same type with the pathogen and see if the disease affects it. 4. Separate the pathogen again and make sure it has not changed....
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This note was uploaded on 03/22/2008 for the course PP 315 taught by Professor Shew during the Spring '08 term at N.C. State.
- Spring '08