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Soils and Minerals Nutrition, Difficulty in storing minerls, Critical for…
Soils and Minerals Nutrition
Concept
Important elements
Calcium
Magnesium
Phosphorus
Sulfur
Nitrogen
Soils
Source of elements for plants
Plant metabolism
Air
Soil
Water
Mineral nutrition
Glyceraldehyde-3-phosphate
From choloroplasts
Number of organisms in soil
Algae
Earthworms
Bacteria
Arthropods
Insects
Microflora/Microfauna
Soils and Minerals Availability
Soil Acidity
Endodermis and selective absorption of substances
Cation
Mycorrhizae and the absorption of phosphorus
Essential Elements
Experiments in hydrophonic Solutions
To find out elements supporting plant growth
Macronutirents
Potassium
Calcium
Nitrogen
Phosphorus
Hydrogen
Magnesium
Oxygen
carbon
Sulfur
Micronutrients
Manganese
Zinc
Copper
Molybdenum
Chlorine
Boron
iron
Trace elements
Criteria for Essentiality
Element itself must be necessary, and no substitute can be effective
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Element must be acting within plant, not outsid it
For complete, normal plant development through a full life cycle
Mineral deficiency Disease
Symptoms of Deficiency diseases
Chlorosis
tends to be yellowish
Brittle and papery
Leaves lack chlorophyll
Necrosis
Leaves are dark color or a purple hue
Left tip and margins die
Leaf tissues between veins to die
Causes of Deficiency Diseases
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Salt production requiring tremendous energy
Toxicity: excess amount of nutrient
Lack of essential nutrients
Mobile and immobile Elements
Mobile
Leaves out of the plant part
Immobile
Cannot move
Link Title
Soil
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weathering
Chemical
Physical
Fine sand
Silt
Coarse sand
Micelles
field capacity
Nitrogen metabolism
Nitrogen assimilation
Incorporation of ammonium
Transamination
Other aspects of prokaryotes and nitrogen
Nitrification
Nitrifying bacteria
Nitrogen reduction
reducing nitrogen into nitrate ion
Obtaining nitrogen from animals
carnivorous plants
Ant-plants
Mutualistic
Domatium
Nitogen fixation
Coversion of N2 gas
nitrate
nitrite
ammonium
all forms of nitrogen
Nitogenase
Enzyme
Storage of minerals within plants
Phytin
Mineral holding form
All parts of plant except seed store minerals in soluble form
Difficulty in storing minerls
Critical for all aspects of cycles
Natural source of nutrients for plant
