Plant Nutrients!

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Across
  1. 2. Essential nutrients required only in small quantities
  2. 5. Symptom of phosphorus deficiency, often seen on stems or leaf undersides
  3. 9. Nitrogen stimulates this underground growth process
  4. 14. Portion of a fertilizer representing the nutrients applied
  5. 15. Symptom of potassium deficiency, especially on older leaves
  6. 17. Material added to lower soil pH (increase acidity)
  7. 18. Material used to raise soil pH (increase alkalinity)
  8. 19. High-energy compound in plant cells requiring phosphorus
  9. 20. Process aided by potassium, involving energy capture in plants
Down
  1. 1. Nitrogen is needed for making these building blocks of proteins
  2. 3. Fertilizer containing nitrogen, phosphorus, and potassium
  3. 4. Nutrients needed by plants in the largest amounts
  4. 6. pH range in which most plants grow best (write as 5.5to8)
  5. 7. Yellowing of green plant parts caused by nitrogen deficiency
  6. 8. Any material that supplies essential nutrients to plants
  7. 10. Measure controlling chemical reactions in soil based on hydrogen ions
  8. 11. Phosphorus is a structural component of these molecules
  9. 12. Part of fertilizer allowing application but providing no nutrients
  10. 13. Nitrogen helps plants produce this green pigment for photosynthesis
  11. 15. Opened and closed with help from potassium
  12. 16. Procedure used to determine the nutrients present in soil