STOP & Consider
There are several options to consider when developing an approach to manage the SCN populations in the fields at Grainly Farms. Recall that pressures put on any population, such as a lack of food or a change in a food source, will ultimately determine which organisms survive and which genes are winners (becoming more popular in the next generation) and which genes are losers (becoming less popular in the next generation). SCN populations are constantly adapting in response to these selection pressures.
Complete the following questions in the 5. Managing Nematode Populations section of your Student Guide.
- List three options for managing SCN populations. For each option, briefly explain how it works, and state how that approach might impact the nematode population in the first year.
- Considering what you know about genetic variability and adaptation, what would happen to SCN populations if you used only one method over several years?
- What management approach do you recommend for Grainly Farms? Explain why this is the best approach.
