Soils and Plant Nutrition Practice Test 2009

  1. Basic Soils
    1. List four uses of soil
    2. Describe the three components of a typical soil.
    3. Describe the PCOTT factors in soil formation.
  2. Soil Identification
    1. The layers of a soil that Mr. Rick showed in his pictures are called _____.
    2. Explain what is meant by a soil's texture.
    3. Rank the three soil particle sizes (that determine texture) from biggest to smallest.
    4. Describe the texture of your soil?
  3. Plant Nutrients
    1. Where do plants get most of their carbon?
    2. List the three key plant nutrients.
    3. List three mobile nutrients.
    4. For NPK, describe each is important for the plant.
    5. Plant nutrients are classified as macro/micro and mobile/immobile. Compare and contrast these two ways of thinking about plant nutrients.
    6. How can you see an element needed for making chlorophyll (photosynthesis) is deficient?
    7. Why does waiting until you see the symptoms reduce your plant output?
    8. When it comes to plant nutrients can there be too much of a good thing? Explain.
    9. You notice the bottom leaves of your plant are yellowing but still have green veins. Is the deficiency a mobile or immobile nutrient? Explain.
  4. Fertilizers
    1. What is the most effective way to improve soil structure?
    2. What is pH?
    3. How can pH affect a plant's growth?
    4. Why did we add ground limestone to out potting soil mix?
    5. The fertilizer package reads 20 - 15 - 5. Explain what that means.
  5. Compost
    1. What is the major benefit of compost?
    2. Why does the City of Oak Harbor want you to compost?
    3. Explain why having aerobic decomposition is preferable to anaerobic.
    4. Why is having a "hot" pile so important?
    5. Draw a diagram of the compost pile "lasagna"?
    6. Your neighbor has an ammonia-smelling compost pile. What is his problem?