1. Plant Nutrition

2. Uptake of Nutrients

3. Macro nutrients Carbon - organic compounds Oxygen - organic compounds
Hydrogen - organic compounds
Nitrogen - nucleic acids, proteins
Sulfur - proteins
Phosphorus- nucleic acids, lipids
Potassium - Protein Synthesis
water balance
Calcium - cell walls, membranes,
permeability
Magnesium - chlorophyll, enzymes
Macro nutrients

4. Micro nutrients Chlorine - water balance, photosynthesis
Iron - cytochromes
Boron - chlorophyll synthesis
Manganese - amino acids
Zinc - Chlorophyll synthesis
Copper - enzymes for redox rxns
Molybdenum - nitrogen fixation
Nickel - Cofactor in nitrogen
metabolism
Micro nutrients

5. Soil Develops from weathered rocks Anchors plants Provides water
Provides dissolved minerals

6. Soil Texture Pertains to sizes of soil particles
includes the following:
sands ( mm)
silt ( mm)
clay (less than mm)

7. Soil Composition
Made up of sand, silt, clay, rocks, humus, microorganisms (bacteria, fungi, algae, protists, insects, worms, roots)
Soil contains a mixture of different sized particles
loam - (40%, 40%, 20%) - fertile

8. The availability of soil water and minerals

9. The availability of soil water and minerals
Plant takes up water not tied to hydrophilic soil particles
Positively charged ions attach to soil and negatively charged ions are lost
Hydrogen ions help displace minerals attached to soil
Roots add hydrogen ions to the soil through the release of carbon dioxide (reacts with water to form carbonic acid)
The availability of soil water and minerals

10. The availability of soil water and minerals

11. Soil Conservation Fertilizers Irrigation Erosion
(Nitrogen, Phosphorus, Potassium)
Irrigation
Erosion

12. Nitrogen Fixation

13. Nitrogen Fixation Plants absorb nitrogen in the form of nitrate
Nitrogen-fixing and ammonifying bacteria produce ammonium
Ammonium is shifted to nitrate by nitrifying bacteria
Plants shift nitrate back to ammonium for use

14. Nutritional Adaptations
Root nodules (legumes)

15. Root Nodule
Roots emit chemical that attract bacteria that stimulates root hair growth
Bacteria penetrates the root cortex
Growth continues and includes pericycle which forms a nodule
Growth continues to include vascular tissue

16. Nutritional Adaptations
Mycorrhizae (mutulalistic)
ectomycorrhizae (surface sheath)
endomycorrhizae (no sheath)

17. Nutritional Adaptations
Parasitic plants
haustoria
mistletoe
dodder
Epiphytes
bromelids / orchids
Carnivorous plants
obtain nitrogen minerals from animals