soil

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Across
  1. 5. cold temperature can cause chilling, freezing, injury, and ___
  2. 6. plants can flower under a wide range of day lenifths
  3. 9. plants can flower when the light period is shorter than the critical day length
  4. 11. damage high temperatures can cause thermal-induced _____
  5. 13. the tendency for plants to grow toward a light source
  6. 14. day light integral
  7. 15. red and blue light promote ______
Down
  1. 1. plants can flower f the light period is as long or longer than the critical day length
  2. 2. light quantity is measured in
  3. 3. quantity the amount and duration of light emitted by a light source
  4. 4. western mountains of NC is zone _
  5. 7. all plants require ___ to grow and develop
  6. 8. peidmont of NC is zone _
  7. 10. southern coast of NC is zone _
  8. 12. hardiness zones are developed by the ____