Laboratory Exercise 17
Rev. 11/13/2012

Purpose:   Rhizosphere and soil biology in relation to nematode ecology and crop production (continued)

     1.   Powerpoint presentation and slides:  Organisms that exploit, compete with, or are antagonistic to plant-parasitic nematodes.

     2. Determine whether there has been predation or parasitism of nematodes in the Petri dishes in which you placed nematodes at the last lab period.

3. Soil suppressiveness test.  

     4.   Videotapes:

     5.   Introduction to the "double logistic model" for assessing nematode management strategies: Nemaplex demonstration.

     6.   In-class NEMAPLEX Exercise
          Main Menu:
            Select...Management and Decision Support   
               Select...Management Strategy Simulator
                  Use the double logistic simulation model to explore the effect of nematode management strategies, and their costs, that:
                   a) reduce the initial population;                      
                   b) reduce the rate of population increase; and
                   c) change the tolerance (carrying capacity) of the host to the nematode.     

                  Determine strategies that optimize effects on yield, crop value, and final population levels.                                   
                  Note the effect on the host, on the nematode population, and on the net crop value.

                Report your conclusions to the class.

     7.  Faunal Analysis reports - 5 minutes per student

     8.   Homework Assignment:

             NEMAPLEX Exercise
                Select...Nematode Management
                  Review:  Principles of Nematode Management.
                           Tactics:  (Various tactics listed)    
                           Emerging Research Developments:  (Various topics listed).
           Return to Main Menu

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