Transcript Document

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
Refer
to Handout
nutrients?
What makes plant look
Unhealthy?
 Discoloration
 Death
of leaves
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