Ch.6 Chemical Characteristics of soil

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Across
  1. 2. Elements such as iron, zinc, boron needed in small amounts.
  2. 3. Soil with high pH, often resulting from parent material or lack of leaching.
  3. 5. Nutrient needed for making chlorophyll in plants.
  4. 6. Important nutrient that helps build strong plant cell walls.
  5. 9. Elements like nitrogen, phosphorus, potassium, calcium in large amounts needed by plants.
  6. 11. Essential nutrient for leafy growth, often supplied in fertilisers.
  7. 14. Element needed for protein formation in plants.
  8. 16. Exchange Capacity Soil’s ability to hold positively charged nutrients like Ca²⁺, K⁺.
  9. 17. Soil with low pH (below neutral) that may limit plant growth and increase solubility of toxic metals.
  10. 18. something added to soil to reduce acidity.
Down
  1. 1. Nutrient that helps plants resist disease and improve root growth.
  2. 4. Stable organic matter in the soil that helps buffer pH and retain moisture & nutrients.
  3. 6. Positively charged ions held by soil colloids (e.g., Ca²⁺, Mg²⁺).
  4. 7. Availability The degree to which soil nutrients are accessible for plant uptake.
  5. 8. Material added to soil to supply nutrients for crops.
  6. 10. Matter Decaying plant & animal residues that contribute to soil fertility and CEC.
  7. 12. Type of colloid that greatly contributes to CEC.
  8. 13. Measure of how acidic or alkaline soil is.
  9. 15. Adding material (e.g. limestone) to raise soil pH and reduce acidity.