Glencoe Earth ScienceUnit 6:
You and the EnvironmentLegumes Fix NitrogenProject Type: Technology
Have students conduct research to identify how peanuts and other legumes “fix” nitrogen. Students then develop a flow chart about nitrogen fixation. They may also design a plan for farmers to select crops and a crop rotation system for different types of soil. Task:
Design a flow chart about nitrogen fixation to include:
- Nitrogen fixing legumes and their bacteria
- Atmospheric nitrogen
- Fixed nitrogen
Write 1-2 page(s) on why crop rotation keeps farm land more productive Design for farmers to include: - Three crop types
- Three crop rotation systems
- Three soil types
Resources:
The following are site to help student understand the nitrogen cycle and research crop rotation. Students may use these and or any other site they find. Nitrogen Cycle
http://en.wikipedia.org/wiki/Nitrogen_cycle Nitrogen Fixation
http://en.wikipedia.org/wiki/Nitrogen_fixation Encyclopedia
Type in “nitrogen cycle” or “crop rotation”
http://www.encyclopedia.com Crop Rotation
http://en.wikipedia.org/wiki/Crop_rotation Crop Rotations for Increased Productivity
http://www.ext.nodak.edu/extpubs/plantsci/crops/eb48-1.htm USDA
Type in “crop rotation”
http://www.usda.gov/wps/portal/usdahome Rubric:  Click here for a rubric to help you score this project.
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