Across
- 2. Below 6.9 on ph scale
- 6. Anything that has once lived
- 7. helps roots grow
- 10. 7 on the ph scale
- 12. natural volcanic material
Down
- 1. decayed organic matter
- 3. contains all primary plant nutrients
- 4. helps plant turn dark green
- 5. Measure of acidity or alkalinity of soil
- 8. nitrogen, phosphorus, potassium
- 9. increases disease resistance
- 11. above 7 on the ph scale