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Role of nutrients and their deficiency Symptoms
#Nitrogen
โช๏ธImpart green colour to plant encourages vegetative growth
โช๏ธ Nitrogen is essential constituent of protein
โช๏ธ Constituent of Protoplasm of chlorophyll and coenzyme.
โช๏ธ Play important role in
synthesis of auxin
#Deficiency
โช๏ธ Lower leaves become yellow and dries.
โช๏ธV shaped chlorosis on older leaves or yellowing at tip.
#Disease
โช๏ธStarvation disease due to nitrogen deficiency.
โช๏ธButtoning in cauliflower.
Phosphorous
โช๏ธIncrease the disease resistance.
โช๏ธ Enhance new cell formation and necessary for root development.
โช๏ธRequired for grain formation and maturity of grains.
โช๏ธPhosphorus is essential constituent for nucleic acid and phytin.
โช๏ธMost essential functions are energy storage and transfer energy act as "energy currency".
#Deficiency
โช๏ธDue to deficiency of single element the life cycle of plant can't be completed hence (Agricultureexamslibrary) Phosphorus is called " key of life "
โช๏ธDeficiency imparts dark green colour in leaves.
โช๏ธLater develops red purple colourration.
#Disease
โช๏ธSickle leaf diseases.
#Potassium
โช๏ธMost essential function of K+ is stomata regulation.
โช๏ธProvides disease resistance in plants.
โช๏ธCofactor for enzymes.
โช๏ธFormation and translocation of Sugars.
โช๏ธHelps in chlorophyll formation.
#Deficiency
โช๏ธSpot of dead tissue at tips.
โช๏ธScorching and burning on margins of autumn leaves.
#Disease
โช๏ธRottle/ dieback disease.
#Calcium
โช๏ธ It is constituent of cell wall
โช๏ธ Calcium is a mobile in plants and deficiency symptoms appear on Meristem tip portion.
# Deficiency
โช๏ธ Terminal bud die
#Disease
โช๏ธTip hooking.
โช๏ธ Blossom end rot of tomato(BER).
โช๏ธPopping in groundnut.
#Magnesium
โช๏ธ Essential constituent of chlorophyll.
โช๏ธ Magnesium is a constituent of chlorophyll.
โช๏ธChlorosis between veins.
#Disease
โช๏ธSand -drown disease of tobacco.
#Sulphur
โช๏ธ Sulphur oxidizing Bacteria is Thiobacillus.
โช๏ธSulphur is essential for oil seed and pulses because it improves oil content and protein content in oil seeds and pulses, respectively.
#Disease
โช๏ธAkiochi disease of rice due to Excess of hydrogen sulphide.
โช๏ธTea yellow disease of tea.
#Iron
โช๏ธFe is the component of nitrate reductase.
โช๏ธRequired for nitrogen fixation.
โช๏ธDuring respiration act as O2 carrier.
#Deficiency
โช๏ธInterveinal complete chlorosis.
โช๏ธScorching of leaf margin.
โช๏ธYellowing of iron chlorosis in groundnut.
#Manganese
โช๏ธFormation of chlorophyll.
โช๏ธCo-factor of enzyme.
โช๏ธMn toxicity causes crinckle leaf of cotton.
#Deficiency
โช๏ธDead spot on leaves.
#Desease
โช๏ธMarsh spot of pea.
โช๏ธPahala blight of sugarcane.
#Copper
โช๏ธCompound of plastocyanin.
โชEssential for photosynthesis/ respiration.Agriexams library
โช๏ธDieback and reclamation disease of cereals.
#Boron
โช Necessary for Pollen germination.
โช๏ธBoron is the only non-metal element among the micronutrient.
โช๏ธIt is necessary for translocation of Sugars and is involved in reproduction and germination of pollen.
#Disease : due to deficiency
โช๏ธBrowning of cauliflower is caused by Boron deficiency.
โช๏ธTop sickness of tobacco.
โช๏ธFruit cracking of tomato.
โช๏ธHard fruit of citrus.
โช๏ธHen and chick disease of grape.
#Zinc
โช๏ธIn plants it is required for biosynthesis of hormones.
โช๏ธZn deficiency causes-
-White bud of maize.
-Khaira disease of rice.
-Little leaf of cotton.
-Mottled leaf of citrus.
-Rosette formation.
#Cobalt
โช๏ธIt is component of Vitamin B
โช๏ธIt is essential for formation of type of hemoglobin in N-fixing nodule tissue known as leghaemogloin.
โช๏ธAct as O2 carrier in roots.
โช๏ธAlso known as animal protein factor.
#Molybdenum
โช๏ธMo: absorbed as molybdate MoO4-2 forms.
โช๏ธMo is important component of enzyme: Nitrate reductage.
โช๏ธN-fixation in pulses.
โช๏ธWhiptail of cauliflower is due to deficiency of Mo
โช๏ธMo is required for carrot & raphanus for sweetness
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