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secondary nutrients
1. Topic: Secondary nutrients(S, Ca & Mg)
Name: Mohammad Abu bakar
Section: B
Roll#:17301514-065
Department: Zoology
Ma’am Summera Jahan
2. Plant Nutrients
Sixteen chemical elements
are known to be important
to a plant growth &
survival. We can divide
these elements under 2
main groups.
Non - Mineral Nutrients
Mineral Nutrients
3. Non - Mineral Nutrients :
Non - Mineral Nutrients are C, H, and
O. These are found in air and water.
Mineral Nutrients :
There is 13 mineral nutrients
These nutrients are divided
in to 2 groups
Micronutrients
Macronutrients
4. Micronutrients
Micronutrients are the elements which are essential for plant gro
only in very small quantities .
The Micronutrients are
Mn
Mo
Zn
B
Cl
Cu
Fe
6. Calcium - Ca
Form of absorption - Ca2+
Function :
1. Stimulate ammonium absorption
2. In the form of Calcium Pectate
responsible for holding together the cell
walls of plants.
3. Important in guard cell physiology
specially in stomata closure.
7. 4. Used activating certain enzymes and to send signals that
coordinate certain cellular activity.
1) Increasing symbiotic fixation of atmospheric
nitrogen.
2) It increasing availability of molybdenum.
Deficiency :
Young leaves and fruit display Calcium deficiencies first.
Blossom end root of tomatoes is a classic case of
Calcium deficiency
Yellow brown spots surrounded by a sharp brown
outline edge.
8. Toxicity :
Rarely occurs
High level of Calcium can compete
with Magnesium and Potassium uptake
causing their deficiencies.
9.
10.
11. Magnesium - Mg
Form of absorption - Mg2+
High Mobility
Function :
1. Chlorophyll Formation
2. Synthesis of amino acids and
cell proteins
3. Resistance to unfavorable factors
12. Deficiency :
Deficiency are not common
1. Yellowing between leaf veins,
sometimes with reddish brown tints
2. Early leaf fall.
3. Also affects chlorophyll formation
Toxicity :
Magnesium toxicity are rare and not
generally exhibited visibly.
13.
14. Sulfur - S
Essential for the growth and development of
all crops
Absorbed through the roots in the form of
Sulphate
Immobile nutrient
Function :
1. Formation of chlorophyll
2. Production of proteins
3. Synthesis of oils in oilseeds
15. Deficiency :
1. Yellowing of the entire leaf including
veins ,usually starting with the younger
leaves
2. Leaf tips may yellow and curl
downward
Toxicity :
1. Leaf size will be reduce
2. Overall growth will be stunted
3. Leaves yellowing or scorched at edges