Plant Nutrition Vs Plant Fertilization

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Plant Nutrition Vs Plant Fertilization

• Nutrition
• Availability and type of chemical
• elements
• in plant

• Fertilization
• Adding nutrients to soil

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Nutrients

• 16 elements
• C, H, O,
• Macronutrients
• Micronutrients

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Macronutrients

• Nutrients required in large quantities
• N (Nitrogen)
• P (Phosphorus)
• K (Potassium)
• Ca (Calcium)
• Mg (Magnesium)
• S (Sulfur)

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Primary Nutrients

• N
• P
• K
• Primary because they are
• needed in large amounts

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Secondary Macronutrients

• Ca
• Mg
• S
• Only moderate amounts required

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Micronutrients(Nutrients needed in small
quantities)

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

• Mo (Molybdenum)
• Na (Sodium)
• Zn (Zinc)

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What are the role of nutrients?

• Refer to Handout

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What makes plant look Unhealthy?

• Discoloration of leaves
• Death of leaf tissue
• Stunted growth

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Examples

• Discoloration
• of
• Leaves

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Chlorosis

• Chlorosis is a yellowing of leaf tissue due to a
  lack of chlorophyll. Possible causes of chlorosis
  include poor drainage, damaged roots, compacted
  roots, high alkalinity, and nutrient deficiencies
  in the plant. Nutrient deficiencies may occur
  because there is an insufficient amount in the
  soil or because the nutrients are unavailable due
  to a high pH (alkaline soil). Or the nutrients
  may not be absorbed due to injured roots or poor
  root growth.

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Nutrient Deficiencies

• N
• Chlorosis on
• lower leaves

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Nutrient Deficiencies

• N
• Chlorosis of
• leaves

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• P
• Purplish
• coloration
• of leaves

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• K
• Chlorosis
• of leaves
• Brown leaf edges

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• K
• Chlorosis
• of leaves
• Brown leaf edges

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Nutrient Deficiencies
S yellowing of entire plant leaves
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How can you correct nutrient deficiency?
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Fertilizer
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What is fertilizer?

• Any material added to the soil to
• provide nutrients that will increase
• growth, yield, or nutritional value of
• the plants.

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Fert Classifications

• Inorganic
• Natural Organic
• Synthetic Organic

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Inorganic Fert

• Non-living sources (minerals/rocks)
• Chemically made

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Inorganic Fert

• Characteristics
• Nutrients in soluble form
• and quickly made available to plants
• Should not come in contact with roots
• or foliage for long time period

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Natural Organic

• From plant/animal material
• Characteristics
• N usually predominant
• Nutrients are only made available to the
  plants as the materials decay in soil, so SLOW
  ACTING LONG LASTING

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Natural Organic

• Examples
• Animal manure
• Cottonseed meal
• Soybean meal
• Dried blood
• Dried ground/sewage sludge
• Bone meal

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Synthetic Organic Fert

• Made from carbon based materials

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