1 / 21

Sustaining the Soil

Sustaining the Soil. Topic 5. Imagine if all the soil on the planet earth would suddenly disappear! What 3 major problems would occur?. Strong winds would tear plants out of the soil or tip them over Plants wouldn’t be able to grow Loss of community in soil. How Does Soil Develop?.

aldon
Download Presentation

Sustaining the Soil

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Sustaining the Soil Topic 5

  2. Imagine if all the soil on the planet earth would suddenly disappear! What 3 major problems would occur? • Strong winds would tear plants out of the soil or tip them over • Plants wouldn’t be able to grow • Loss of community in soil

  3. How Does Soil Develop? • Parent Material: • Mineral (non-organic) matter (rock, soil, clay) from which the soil developed.

  4. Climate • Determines what kind of plants will grow and how fast they decompose

  5. Vegetation that grows • Determines amount and type of organic material that is in the soil

  6. Water • Brings new soil and nutrients

  7. Time • All these process take lots of time

  8. Healthy soil contains many amazing creatures. They include: • Gophers, earthworms, insects, microscopic bacteria and fungi

  9. Decomposers • Decomposers are organisms that break down plant and animal tissue, forming humus

  10. The four key decomposers are: • Bacteria • Fungi-mould & mushrooms • Microscopic actinomycetes • Earthworms

  11. All you can eat pg 155 • All plants require large amounts of nutrients. The six major nutrients that plants need are nitrogen, phosphorus, potassium, sulphur, calcium, magnesium.

  12. What nutrients usually need to be added to soil? • Nitrogen, phosphorus, and potassium

  13. Salinization • When salt has collected on the surface of the soil

  14. What two factors contribute to salinization? • Too little vegetation and too much water

  15. How can the problem of salinization be solved? • By replanting the areas so the plants use up the water before it seeps away

  16. Why is soil erosion a serious problem? • 15-30% of organic matter has been lost in just a few decades

  17. http://www.youtube.com/watch?v=Hy_PqKsv9mY

  18. What 4 things can farmers do to help preserve their soil? P 158-159 • Planting a cover of vegetation, use seed drills, plant shelter belts modify waterways, use crop rotation.

  19. Hydroponics is the technique for growing plants without soil.

  20. What gives the plants their nutrients? • A special fertilizer

  21. What is aquaponics? • Combines raising fish and growing plants in an aquaculture system

More Related