Plant Nutrition Summary (Nutrients) PDF

Element Form Available % Mass in Major Function Deficiency symptoms Macronutrients to Plants Dry Tissue Carbon CO2 45% Major component of plant's -...

Element Form Available % Mass in Major Function Deficiency symptoms Macronutrients to Plants Dry Tissue Carbon CO2 45% Major component of plant's - organic compounds Oxygen CO2 45% Major component of plant's - organic compounds Hydrogen H2O 6% Major component of plant's - organic compounds Nitrogen NO3- , NH4+ 1.5% Component of nucleic acids, -Reduced growth (Nitrate) & (ammonia). proteins, hormones, -Yellowing of old leaves chlorophyll, coenzymes -Highly mobile Potassium K+ 1.0% Cofactor that functions in protein -Leaf margin necrosis/ synthesis; major hard cracking and solute functioning in water browning {Older balance; operation of stomata leaves more effected } Calcium Ca2+ 0.5% Important in formation and -Stunted growth, leaf stability of cell walls and in distortion, necrotic maintenance of membrane spots, shoot tip death structure and permeability: -Blossom-end rot in activates some enzymes; regulates tomato many responses of cells to stimuli -Immobile - needed during the formation of mitotic spindle (chloroplast) Magnesium Mg2+ 0.2% Component of chlorophyll; -Interveinal chlorosis activates many enzymes on mature leaves - Highly mobile Phosphorus phosphate ions 0.2% Component of nucleic acids, - dark, purplish color (either as H2PO4 − phospholipids, ATP, on older leaves or HPO42− ). several coenzymes Sulfur sulphate (SO42− ) 0.1% Component of proteins, light green or coenzymes yellowing on new -Immobile growth If any plant gets less than the treshholed limit → effect deficiency Element Form Available % Mass in Major Function Toxicity Macronutrients to Plants Dry Tissue Iron Fe3+, Fe2+ 0.01% Component of cytochromes; Iron chlorosis develops activates some enzymes when soil pH is high Manganese Mn2+ 0.005% Active in formation of amino - Chlorosis on new (Mn) acids; activates some growth with small, enzymes; required for water- numerous dark spots splitting step of -Deficiency occurs at photosynthesis high pH -Toxicity occurs at low pH Boron H2BO3- 0.002% Cofactor in chlorophyll synthesis; - Twig die back, fruit may be involved in splitting, leaf edge carbohydrate transport and nucleic burns acid synthesis; role in cell wall function Zn2+ 0.002% Active in formation of - (occurs at low pH) Zinc chlorophyll; activates some Growth reduction, leaf enzymes chlorosis Molybdenum MoO4 2-