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NUTRIENTS AND THEIR DEFICIENCY

🔰 Role of nutrients and their deficiency Symptoms 🔰

Nitrogen

▪️Impart green colour to plant encourages vegetative growth

▪️ Nitrogen is essential constituent of protein

▪️ Constituent of Protoplasm of chlorophyll and coenzyme.

▪️ Play important role in
synthesis of auxin

Deficiency

▪️ Lower leaves become yellow and dries.

▪️V shaped chlorosis on older leaves or yellowing at tip.

Disease

▪️Starvation disease due to nitrogen deficiency.

▪️Buttoning in cauliflower.

Phosphorous

▪️Increase the disease resistance.

▪️ Enhance new cell formation and necessary for root development.

▪️Required for grain formation and maturity of grains.

▪️Phosphorus is essential constituent for nucleic acid and phytin.

▪️Most essential functions are energy storage and transfer energy act as “energy currency”.

Deficiency

▪️Due to deficiency of single element the life cycle of plant can’t be completed hence (Agricultureexamslibrary) Phosphorus is called ” key of life “

▪️Deficiency imparts dark green colour in leaves.

▪️Later develops red purple colourration.

Disease

▪️Sickle leaf diseases.

Potassium

▪️Most essential function of K+ is stomata regulation.

▪️Provides disease resistance in plants.

▪️Cofactor for enzymes.

▪️Formation and translocation of Sugars.

▪️Helps in chlorophyll formation.

Deficiency

▪️Spot of dead tissue at tips.

▪️Scorching and burning on margins of autumn leaves.

Disease

▪️Rottle/ dieback disease.

Calcium

▪️ It is constituent of cell wall

▪️ Calcium is a mobile in plants and deficiency symptoms appear on Meristem tip portion.

Deficiency

▪️ Terminal bud die

#Disease

▪️Tip hooking.

▪️ Blossom end rot of tomato(BER).

▪️Popping in groundnut.

Magnesium

▪️ Essential constituent of chlorophyll.

▪️ Magnesium is a constituent of chlorophyll.

▪️Chlorosis between veins.

Disease

▪️Sand -drown disease of tobacco.

Sulphur

▪️ Sulphur oxidizing Bacteria is Thiobacillus.

▪️Sulphur is essential for oil seed and pulses because it improves oil content and protein content in oil seeds and pulses, respectively.

Disease

▪️Akiochi disease of rice due to Excess of hydrogen sulphide.

▪️Tea yellow disease of tea.

Iron

▪️Fe is the component of nitrate reductase.

▪️Required for nitrogen fixation.

▪️During respiration act as O2 carrier.

Deficiency

▪️Interveinal complete chlorosis.

▪️Scorching of leaf margin.

▪️Yellowing of iron chlorosis in groundnut.

Manganese

▪️Formation of chlorophyll.

▪️Co-factor of enzyme.

▪️Mn toxicity causes crinckle leaf of cotton.

Deficiency

▪️Dead spot on leaves.

Desease

▪️Marsh spot of pea.

▪️Pahala blight of sugarcane.

Copper

@agricultureexams2020

▪️Compound of plastocyanin.

▪Essential for photosynthesis/ respiration.Agriexams library

▪️Dieback and reclamation disease of cereals.

Boron

▪ Necessary for Pollen germination.

▪️Boron is the only non-metal element among the micronutrient.

▪️It is necessary for translocation of Sugars and is involved in reproduction and germination of pollen.

Disease : due to deficiency

▪️Browning of cauliflower is caused by Boron deficiency.

▪️Top sickness of tobacco.

▪️Fruit cracking of tomato.

▪️Hard fruit of citrus.

▪️Hen and chick disease of grape.

Zinc

▪️In plants it is required for biosynthesis of hormones.

▪️Zn deficiency causes-

-White bud of maize.
-Khaira disease of rice.
-Little leaf of cotton.
-Mottled leaf of citrus.
-Rosette formation.

Cobalt

▪️It is component of Vitamin B

▪️It is essential for formation of type of hemoglobin in N-fixing nodule tissue known as leghaemogloin.

▪️Act as O2 carrier in roots.

▪️Also known as animal protein factor.

Molybdenum

▪️Mo: absorbed as molybdate MoO4-2 forms.

▪️Mo is important component of enzyme: Nitrate reductage.

▪️N-fixation in pulses.

▪️Whiptail of cauliflower is due to deficiency of Mo.

▪️Mo is required for carrot & raphanus for sweetness.

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