Plants need nitrogen to build proteins and nucleic acids to grow healthy stems and leaves. Though the Earth's atmosphere is made up of 79% nitrogen, the form of nitrogen found in the atmosphere cannot be used by plants. In this experiment, you will compare the increase in biomass of clover plants grown in soil with no nitrogen added, in soil with nitrogen fertilizer added and in soil with nitrogen-fixing bacteria added.

Concepts

nitrogen, plants

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Additional Tags

science fair project, plant biology, science buddies, fertilizer, science project, nitrogen cycle

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Classroom Considerations

• Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)