The Essential elements OXygen Carbon Hydrogen Nitrogen Potassium Calcium Phosphorus Magnesium Sulfur Silicon Chlorine Molybdenum Iron Manganese Copper Boron Zinc Sodium Nickel
The Essential Elements Oxygen Carbon Hydrogen Nitrogen Potassium Calcium Phosphorus Magnesium Sulfur Silicon Chlorine Molybdenum Iron Manganese Copper Boron Zinc Sodium Nickel
Macroelements From the soil From H2o and co2 Nitrogen OXygen Phosphorus Carbon Potassium Hydrogen Calcium Magnesium Sulfur SIlicon
Macroelements ➢ From H2O and CO2 • Oxygen • Carbon • Hydrogen ➢ From the soil: • Nitrogen • Phosphorus • Potassium • Calcium • Magnesium • Sulfur • Silicon
Microelements Chlorine ·|ron Manganese(Mn) · Boron Molybdenum Zinc Copper Nickel Sodium
Microelements • Chlorine • Iron • Manganese（Mn） • Boron • Molybdenum • Zinc • Copper • Nickel • Sodium
Function of Essential Elements Structure of important compounds: amino acids, protein, nuclear acids, etc Enzyme-activating Contributing to osmotic potentials Energy metabolism: ATP, ADP, AMP All of the above
Function of Essential Elements ➢ Structure of important compounds: amino acids, protein, nuclear acids, etc. ➢ Enzyme-activating ➢ Contributing to osmotic potentials ➢ Energy metabolism: ATP, ADP, AMP ➢ All of the above
Usually most deficient elements in soils Nitrogen Phosphorus Potassium
Usually most deficient elements in soils ➢ Nitrogen ➢ Phosphorus ➢ Potassium