Across
- 2. Make burrows that improve aeration, release nutrients
- 7. Growing crops in different places each year
- 10. A measure of soil acidity
- 12. How much air a soil has in it
- 16. Have root nodules with bacteria that fix nitrogen in the soil
- 18. Adding water to soil, sprinklers, driplines
- 20. Chemicals needed for optimum plant growth
- 22. How quickly water moves through soil
Down
- 1. Smallest mineral particle
- 3. Laid on the soil surface, prevents water loss and weed growth
- 4. An ideal soil for growing a range of crops
- 5. Essential for photosynthesis
- 6. Broken down/decomposed organic matter
- 8. Living things and broken down living things
- 9. Moving of nutrients through soil with water
- 11. Contains oxygen for respiration
- 13. Soil crumbs containing mineral particles stuck together with humus
- 14. Working up of soil
- 15. Raises pH
- 17. Largest mineral particle
- 19. Proportion of sand, silt and clay particles in a soil
- 21. Medium mineral particle