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Photoperiod: The floral initiator

What drives plants to flower and reproduce? In this lesson students will plant and care for soybeans under one of three different photoperiod regimes:

  • First month: 16 hours; Second month: 14 hours; third month: 12 hours (control)
  • 16 hours for all three months (long days)
  • 12 hours for all three months (short days)
  • As the plants grow, students will analyze and maintain records of their plant’s progress.

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