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3 10 Soil Amendments
 

3 10 Soil Amendments

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    3 10 Soil Amendments 3 10 Soil Amendments Presentation Transcript

    • Growing Environment Plant: Saucer Magnolia Term: Soil Amendments
    • Saucer Magnolia Magnolia x loebneri
      • Plant type: Tree, deciduous
      • USDA Hardiness Zones: 4b to 8a
      • Height: 25-30’,
      • Exposure: full sun
      • Bloom Color: White, pink
      • Bloom Time: spring
      • Landscape Uses: Espalier, Specimen
      • Special Features: Fragrant flowers,
      • Blooms are very showy
    • Soil Amendment
      • A material that you add to the soil to improve its chemical or physical properties.
    • Compost
      • A mixture of decaying organic matter, as from leaves and manure, used to improve soil structure and provide nutrients
    • Soil Fertility
      • Measure of the nutrients in a soil available for plant life;
      • Macronutrients: N-P-K
        • Nitrogen, Phosphorus, Potassium
      • Secondary:
        • Calcium, Magnesium, Sulfur
      • Micronutrients:
        • BORON (B)  -IRON (Fe)
        • CHLORINE (Cl)  -MANGANESE (Mn)
        • COPPER (Cu)    -MOLYBDENUM (Mo)
        • ZINC (Zn)
    • Fertilizers: N-P-K
      • N is for % Nitrogen
      • P is for % Phosphorus
      • K is for % Potassium
      • If a fertilizer is 10 – 10 – 10. It is a Balanced fertilizer for general purpose use. It has 10% each of the macronutrients and 70% filler to make application easier
      • Lawn fertilizer would have a balance like 16 - 4 - 4.
      Write this down
    • Soil testing
      • Test kit for NPK
      • Send off samples to extension service for micronutrients
      • New testing for biological activity
      • Applying fertilizer with out a soil test is a potential waste of money and harmful to the environment
    • Nitrogen
      • Start-up fertilizer
      • Green growth
      • Need most for grasses
      • Don’t add to fruiting plants except at initial planting
        • Get green growth & no flowers & fruit
      • Nitrogen deficiency – yellow color
    • Soil Amendments Nitrogen
      • Nitrate of Soda: Inorganic, Soluble & quickly available. Lowers acidity. 16% N
      • Ammonium nitrate: Inorganic, Not as soluble. 33%N
      • Ammonium sulfate: Inorganic, Lower solublilty. Makes soil acidic. 21% N
      • Urea formaldehyde: Organic, available more slowly, 38%N
    • Leaching
      • The more soluble a fertilizer is
        • The quicker it is available to plants
        • The faster it washes (leaches out of the soil)
      • Insoluble fertilizers
        • Also called slow release fertilizer – releases throughout the growing season.
        • Some fertilizers are coated to slow their release
    • Phosphorus amendments
      • Superphosphate: 20% P
      • Treble superphosphate: 46% P
      • Rock phosphate: 25 – 35% P
      • Ammonium phosphate: 48% P
      • Held tightly by soil so does not leach
      • Excess application does the most damage to lakes & streams
    • Potassium Amendments
      • Muriate of potash: 60% K
      • Sulfate of potash: 49% K
      • Nitrate of potash: 44% K
    • pH
      • Lime is added to increase the pH.
      • Sulfur or iron sulfate or Mg Sulfate is added to decrease the pH for acid loving plants.
      • Acid favoring plants;
        • Hollies, Camellias, Azaleas, Rhododendrons,
        • Hydrangeas – blooms change color based on pH.
        • Vegetables: egg plant, potatoes, & watermelon
      • Lime also supplements calcium (minor nutrient). Piedmont Virginia soils are frequently calcium deficient
    • Organic Amendments
      • Compost – adds tilthe ?-?-?, relatively low
      • Cottonseed meal: 7-3-2
      • Fish emulsion: 5-1-1
      • Bonemeal: 4-12-0
      • Bloodmeal: 11-0-0
      • Manure: 1-1-1
      • Sewage sludge: 2-1-1*
        • *May not be eligible for organic certification
    • Fertilizer Calculation
      • Get the dilution factor from the injector
      • The desired concentration will be different for different plants
      • The % N will be on the fertilizer bag
      • Multiply the answer by the number of gallons that the stock tank holds
      Lbs of fertilizer To make 1 gallon = Of stock solution Desired conc. X Dilution in PPM factor % N in Fert. X 1200
    • Soil Texture Test
      • Gather samples
      • Sample should be just soil – no plants
    • Today
      • Soil Texture
      • Soil fertility
      • Plugs?