Supplying Nutrients to Floriculture Crops

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Supplying Nutrients toFloriculture Crops
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Interest Approach

• What do vitamins do for you?
• What do you feel like when your sick?
• What are essential elements in fertilizer?
• What do they do for the plant?
• What does a plant look like when its deficient
  in this nutrient?

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Interest Approach

• Vitamins
• C health
• D strength
• A eyesight
• Calcium-bones
• Iron-blood

• Elements
• N growth
• P blossoms
• Ca cell strength
• K - roots

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Student ObjectivesAfter this lesson you CAN

• 1. Name the nutrients needed for plant growth.
• 2. Describe pH and how it is modified.
• 3. Describe the components of a fertilizer.
• 4. Explain the methods of applying fertilizers to
  floriculture crops.

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Macronutrients - elements that are needed by the
plant in the largest amount.

• Primary macros
• nitrogen (N)
• phosphorus (P)
• potassium (K)

• Secondary macros
• calcium (Ca)
• magnesium (Mg)
• sulfur (S).

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Micronutrients -Needed in Smaller Amounts by the
Plants, but Are Still Essential

• Boron (B)
• Copper(Cu)
• Chlorine (Cl)
• Iron (Fe)

• Manganese (Mn)
• Molybdenum (Mo)
• Zinc (Zn)

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Soil Tests

• can be performed on the soil to determine which
  nutrients are present or deficient (absent or
  lacking).
• Are only as accurate as the test you get what
  you pay for
• Can confirm nutrient deficiency shown by plant
  leaves.

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Chlorosis
Generally begins in older leaves
Symptoms include poor plant growth, and leaves
that are pale green or yellow because they are
unable to make sufficient chlorophyll.
Nitrogen
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Undersides of tomato plant leaves, and the veins
and stems, may turn purple
often overlooked or misdiagnosed as a nitrogen
deficiency
weak thin stalks
may cause the plant to stop producing blooms
Phosphorous
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brown scorching and curling of leaf tips as well
as chlorosis(yellowing) between leaf veins
Purple spots may also appear on the leaf
undersides
Potassium
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Fertilizer

• Material provided to supply nutrients needed for
  plant growth.
• 2 types of fertilizer
• Complete contains the 3 Primary Macros
• Incomplete missing 1 or more Primaries
• Fertilizer analysis states the percentage of
  primary nutrients.

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16 4 8

• 16 N
• 4 P2O5
• 8 K2O
• Equals 28??? Where is the rest?!?
• Salts and other fillers make up the remaining 72

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Fertilizer

• Available in three phases
• Liquid, solid, gas (rarely used in floriculture)
• Applied by several methods
• Premixed into soil.
• Sprayed onto foliage.
• Injected into irrigation water.
• Slow release dissolves over extended period of
  time.

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Organic vs. Inorganic

• First off, what does this mean??
• Organic is naturally occurring
• Inorganic is man made or produced
• CLIP

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Review
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What are the nutrients needed for plant growth?

• Name the 3 primary macronutrients.
• NPK
• Name the 3 secondary macronutrients.
• Ca
• S
• Mg
• The micronutrients?
• Fe., Cu B, Zn, Cl, Mo, MN

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What is pH and how is it modified?

• Define pH.
• Measure of acidity / alkalinity
• potential of Hydrogen
• Add limestone to _________ pH?
• Add sulfur to ___________pH?

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What are the components of a fertilizer?

• Incomplete vs. complete?
• Complete has the 3 primary macros
• Incomplete is missing some primaries
• What is fertilizer analysis?

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How are fertilizers applied to floriculture crops?

• List the 3 phases of fertilizers.
• Liquid, solid, gas
• List the application methods.
• Irrigation injection
• Slow release
• Premix into soil
• Spray onto foliage