Plant Nutrition Vs Plant Fertilization Nutrition: Availability and type of chemical elements in...
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Transcript of Plant Nutrition Vs Plant Fertilization Nutrition: Availability and type of chemical elements in...
Plant Nutrition Vs Plant Fertilization
Nutrition:
Availability and type of chemical
elements
in plant
Fertilization:
Adding nutrients to soil
Nutrients
16 elements: C, H, O, Macronutrients Micronutrients
Macronutrients Nutrients required in
large quantities N (Nitrogen)
P (Phosphorus) K (Potassium) Ca (Calcium) Mg (Magnesium) S (Sulfur)
Primary Nutrients N P K
Primary because they are
needed in large amounts
Secondary Macronutrients
Ca Mg S
Only moderate amounts required
Micronutrients(Nutrients needed in small
quantities)
B (Boron) Cu (Copper) Cl (Chlorine) Fe (Iron) Mn
(Manganese)
Mo (Molybdenum)
Na (Sodium) Zn (Zinc)
What are the role of nutrients?Refer to Handout
What makes plant look Unhealthy?
Discoloration of leaves
Death of leaf tissue
Stunted growth
Examples
Discoloration
of
Leaves
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.
Nutrient Deficiencies N
Chlorosis on
lower leaves
Nutrient Deficiencies
N
Chlorosis of
leaves
P
Purplish
coloration
of leaves
K
Chlorosis
of leaves
Brown leaf edges
K
Chlorosis
of leaves
Brown leaf edges
Nutrient Deficiencies
S: yellowing of entire plant; leaves
How can you correct nutrient deficiency?
Fertilizer
What is fertilizer?
Any material added to the soil to
provide nutrients that will increase
growth, yield, or nutritional value of
the plants.
Fert Classifications Inorganic
Natural Organic
Synthetic Organic
Inorganic Fert
Non-living sources (minerals/rocks)
Chemically made
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
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
Natural Organic
Examples: Animal manure Cottonseed meal Soybean meal Dried blood Dried ground/sewage sludge Bone meal
Synthetic Organic Fert
Made from carbon based materials