plant nutrients & its role
DESCRIPTION
This document describes about role of plant nutrientsTRANSCRIPT
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By – Vigyan Ashram , Pabal
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Macro vs Micro NutrientsMacro nutrients are required by the plant in
relatively large amountsMicro nutrients are required only in small
amountsminor or trace elements
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Macro nutrientsNon-mineral
elementscarbon (C)hydrogen (H)oxygen (O)
Primary NutrientsNitrogen (N)Phosphorus (P)Potassium (K)
Secondary Nutrientscalcium (Ca)magnesium (Mg)sulfur (S)
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Micro nutrientsIron (Fe)Copper (Cu)Zinc (Zn)Boron (B)Molybdenum (Mo)Manganese (Mn)Chlorine (Cl)
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Functions of NitrogenPromotes growth of leaves and stemsGives dark green color and improves quality
of foliageNecessary to develop cell proteins and
chlorophyll
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Materials Supplying Nitrogen -
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NitrogenDeficiency symptoms
sick, yellow-green colorshort stems, small leaves, pale colored leaves
and flowersslow and dwarfed plant growth
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Nitrogen deficiency
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Functions of PhosphorusStimulates early formation and growth of
rootsProvides for fast and vigorous growth and
speeds maturityStimulates flowering and seed developmentNecessary for the enzyme action of many
plant processes
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Materials Supplying Phosphorus -
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PhosphorusDeficiency symptoms
decrease in growthslow maturityolder leaves are purplish color
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Phosphorus Deficiency
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Functions of PotassiumUsed to form carbohydrates and proteinsFormation and transfer of starches, sugars
and oilsIncreases disease resistance, vigor and
hardiness
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Materials Supplying Potassium -
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PotassiumDeficiency symptoms
mottled, spotted, streaked or curled leavesscorched, burned, dead leaf tips and margins
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Functions of CalciumImproves plant vigorInfluences intake and synthesis of other plant
nutrientsImportant part of cell walls
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CalciumDeficiency symptoms
small developing leaveswrinkled older leavesdead stem tips
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Functions of MagnesiumInfluences the intake of other essential
nutrientsHelps make fatsAssists in translocation of phosphorus and
fats
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MagnesiumDeficiency symptoms
Interveinal chlorosis-yellowing of leaves between green veins
leaf tips curl or cup upwardslender, weak stalks
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Functions of SulfurPromotes root growth and vigorous
vegetative growthEssential to protein formation
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SulfurDeficiency symptoms
young leaves are light green with lighter color veins
yellow leaves and stunted growth
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IronFunctions of Iron
Essential for chlorophyll productionHelps carry electrons to mix oxygen with other
elementsDeficiency symptoms
mottled and interveinal chlorosis in young leaves
stunted growth and slender, short stems
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CopperFunctions
Helps in the use of IronHelps respiration
Deficiency symptomsyoung leaves are small and permanently wiltmultiple buds at stem tip
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Copper Deficiency
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ZincFunctions
plant metabolismhelps form growth hormonesreproduction
Deficiency symptomsretarded growth between nodes (rosetted)new leaves are thick and smallspotted between veins, discolored veins
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BoronFunctions
affects water absorption by rootstranslocation of sugars
Deficiency Symptomsshort, thick stem tipsyoung leaves of terminal buds are light green
at baseleaves become twisted and die
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ManganeseFunctions
plant metabolismnitrogen transformation
Deficiency symptomsinterveinal chlorosisyoung leaves die
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MolybdenumFunctions
plant developmentreproduction
Deficiency symptomsstunted growthyellow leaves, upward curling leaves, leaf
margins burn
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ChlorineFunctions
essential to some plant processesacts in enzyme systems
Deficiency symptomsusually more problems with too much chlorine
or toxicity than with deficiency
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