2nd of May, 2007 G4 General Trading LLC Plant and Soil by Prof. Gernot K. Brueck, Ph.D.
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Transcript of 2nd of May, 2007 G4 General Trading LLC Plant and Soil by Prof. Gernot K. Brueck, Ph.D.
2nd of May, 2007 G4 General Trading LLC
Plant and Soil
by
Prof. Gernot K. Brueck, Ph.D.
2nd of May, 2007 G4 General Trading LLC
Plants consists of:
• carbohydrats– sugars and/or– starch
• proteins– aminoacids as basic element – peptides to polypeptides = proteins
• water
2nd of May, 2007 G4 General Trading LLC
The only responsible miracle for all organic matter and any life in the world is:
• Photosynthesis
6H2O (water) +
6CO2 (carbondioxid+
energie (light) =
C6H12O6 (glycose) +
6 O2 (oxygen) beside it:bacteria, yeasts, molds as aminoacid producers
2nd of May, 2007 G4 General Trading LLC
The carbon cycle
2nd of May, 2007 G4 General Trading LLC
Which further elements are necessary ? • Nitrogen (N)
– essential part of all aminoacids = proteins
• Potassium (K)– responsible for protein synthesis, control of ionic balance,
regulation of plant stomata and water use, activation of plant enzymes and many other processes
• Phosphorus (P)– essential part of the photosythesis
and smaller amounts of Sulfur, Magnesium and Calcium which are left out in the further consideration, because their cycles are near to potassium
2nd of May, 2007 G4 General Trading LLC
The phosphorus cycle
2nd of May, 2007 G4 General Trading LLC
The potassium cycle
2nd of May, 2007 G4 General Trading LLC
The nitrogen cycle
Aerobic processes (= high oxygen content) are converting any nitrogen compound into plant available nutrient and anaerobic processes are leading to nitrogen losses
2nd of May, 2007 G4 General Trading LLC
Summary
• plant growth relevanta. sufficient basic nutrients N-P-K in the soil
b. high oxygen content in the soil for just aerobic processes
c. avoiding anaerobic situations with N and root losses
d. sufficient water
• if the organic matter remains at the place = in the cycle, no further fertilizers are necessary !