sustainable cross word puzzle

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Across
  1. 1. Rotation Systematic approach of planting crops from season to season or year to year.
  2. 2. Principles
  3. 5. Phosphorus, and Potassium are the three primary nutrients
  4. 6. cropping- Growing crops in a systematic arrangement across a field.
  5. 9. Conservation Promises future production and use of the soil.
  6. 10. Cycles
  7. 12. will raise the pH value in soils
  8. 13. Microbiology Just a few grams of soil (less than a teaspoonful) is the home to hundreds of millions and sometimes billions of microorganism.
Down
  1. 1. Cropping Cover crops are plants seeded into agricultural fields, either within or outside of the regular growing season, with the primary purpose of improving or maintaining ecosystem quality.
  2. 3. to Soils
  3. 4. Compost is the use of once living material to create a nutrient-rich material to add to soil.
  4. 7. obtain nutrients from the soil using roots.
  5. 8. plantings
  6. 9. contamination results when hazardous substances are either spilled or buried directly in the soil
  7. 11. Tilling is used to remove weeds.