Differences between Macro-nutrients and Micro-nutrients

1. DIFFERENCES BETWEEN
MACRONUTRIENTS AND
MCRONUTRIENTS

2. • Macronutrients are needed in tissue
concentration of 1000mg/kg of dry
matter.
• Nine micronutrients.
• Eg- carbon, nitrogen, phosphorus ,
potassium
 Micronutrients are needed in tissue
concentration equal to or less than 100
mg/kg dry matter.
 Eight micronutrients.
 Eg- boron, copper, zinc, chloride and
nickel
Introduction

3. Differences between macronutrient and
micronutrient
Macronutrients
• Required in excess of 10mmole/kg
of dry weight.
• Total Nine macronutrient
• Needed in tissue concentration of
1000mg/kg of dry matter.
Micronutrients
• Required in less than 10mmole/kg
of dry weight.
• Total eight micronutrient
• Needed in tissue concentration
equal to or less than100mg/kg of
dry matter.

4. Macronutrients
• Also known as major elements.
• Will not become toxic readily.
• Role – largely involved in structure
of molecules, catalytic role, help in
maintaining osmotic potential and
also have regulatory role like Ca
and Mg.
Micronutrients
• Also known as minor or trace
elements.
• Become toxic even there is slight
excess of micronutrients.
• Role – catalytic and regulatory role
such as enzymes activation , like Fe
in peroxidase cytochromes.

5. Macronutrients
• Deficiency symptoms – interveinal
chlorosis of older leaves due to Mg
deficiency, blossom end rot of
tomatoes due to Ca deficiency and
many more.
• Examples – Carbon, hydrogen,
oxygen, potassium, phosphorous,
calcium, sulphur and magnesium.
Micronutrients
• Drought spot of apples and heart
rot of beets due to Boron
deficiency, little leaf disorder in
peach due to Zn deficiency, urea
accumulates in leaves due to Ni
deficiency.
• Examples- boron, copper, iron,
zinc, manganese, chloride , nickel
and molybdenum.