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