Transcript Plant nutrients and its role

Soil Nutrients and it’s
Role
By – Vigyan Ashram , Pabal
| Vigyan Ashram | INDUSA PTI |
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Macro Vs Micro Nutrients
• Macro nutrients are required by the plant in
relatively large amounts
• Micro nutrients are required only in small
amounts
– minor or trace elements
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Macro nutrients
• Non-mineral elements
– carbon (C)
– hydrogen (H)
– oxygen (O)
• Secondary Nutrients
– calcium (Ca)
– magnesium (Mg)
– sulfur (S)
• Primary Nutrients
– Nitrogen (N)
– Phosphorus (P)
– Potassium (K)
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Micro nutrients
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Iron (Fe)
Copper (Cu)
Zinc (Zn)
Boron (B)
Molybdenum (Mo)
Manganese (Mn)
Chlorine (Cl)
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Functions of Nitrogen
• Promotes growth of leaves and stems
• Gives dark green color and improves quality of
foliage
• Necessary to develop cell proteins and
chlorophyll
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Materials Supplying Nitrogen
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Nitrogen
• Deficiency symptoms
– sick, yellow-green color
– short stems, small leaves, pale colored leaves and
flowers
– slow and dwarfed plant growth
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Nitrogen deficiency
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Functions of Phosphorus
• Stimulates early formation and growth of
roots
• Provides for fast and vigorous growth and
speeds maturity
• Stimulates flowering and seed development
• Necessary for the enzyme action of many
plant processes
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Materials Supplying Phosphorus
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Phosphorus
• Deficiency symptoms
– decrease in growth
– slow maturity
– older leaves are purplish color
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Phosphorus Deficiency
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Functions of Potassium
• Used to form carbohydrates and proteins
• Formation and transfer of starches, sugars and
oils
• Increases disease resistance, vigor and
hardiness
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Materials Supplying Potassium
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Potassium
• Deficiency symptoms
– mottled, spotted, streaked or curled leaves
– scorched, burned, dead leaf tips and margins
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Potassium Deficiency
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Functions of Calcium
• Improves plant vigor
• Influences intake and synthesis of other plant
nutrients
• Important part of cell walls
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Calcium
• Deficiency symptoms
– small developing leaves
– wrinkled older leaves
– dead stem tips
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Calcium Deficiency
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Functions of Magnesium
• Influences the intake of other essential
nutrients
• Helps make fats
• Assists in translocation of phosphorus and fats
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Magnesium
• Deficiency symptoms
– Interveinal chlorosis-yellowing of leaves between
green veins
– leaf tips curl or cup upward
– slender, weak stalks
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Magnesium Deficiency
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Functions of Sulfur
• Promotes root growth and vigorous vegetative
growth
• Essential to protein formation
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Sulfur
• Deficiency symptoms
– young leaves are light green with lighter color
veins
– yellow leaves and stunted growth
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Sulfur Deficiency
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Iron
• Functions of Iron
– Essential for chlorophyll production
– Helps carry electrons to mix oxygen with other
elements
• Deficiency symptoms
– mottled and interveinal chlorosis in young leaves
– stunted growth and slender, short stems
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Iron Deficiency
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Copper
• Functions
– Helps in the use of Iron
– Helps respiration
• Deficiency symptoms
– young leaves are small and permanently wilt
– multiple buds at stem tip
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Copper Deficiency
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Zinc
• Functions
– plant metabolism
– helps form growth hormones
– reproduction
• Deficiency symptoms
– retarded growth between nodes (rosetted)
– new leaves are thick and small
– spotted between veins, discolored veins
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Zinc Deficiency
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Boron
• Functions
– affects water absorption by roots
– translocation of sugars
• Deficiency Symptoms
– short, thick stem tips
– young leaves of terminal buds are light green at
base
– leaves become twisted and die
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Boron Deficiency
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Manganese
• Functions
– plant metabolism
– nitrogen transformation
• Deficiency symptoms
– interveinal chlorosis
– young leaves die
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Manganese Deficiency
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Molybdenum
• Functions
– plant development
– reproduction
• Deficiency symptoms
– stunted growth
– yellow leaves, upward curling leaves, leaf margins
burn
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Molybdenum Deficiency
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Chlorine
• Functions
– essential to some plant processes
– acts in enzyme systems
• Deficiency symptoms
– usually more problems with too much chlorine or
toxicity than with deficiency
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Chlorine Deficiency
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Summery Table
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Thank you !
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