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SOIL BIOLOGICAL CHARACTERISTICS (8.2: Role of organisms in enhancing soil…
SOIL BIOLOGICAL CHARACTERISTICS
8.1: Soil macro-organisms and micro-organisms
Soil Micro organism
Insect and other arthropods
Snails
Earthworm
Nematods
Soil Macro-organism
Bacteria
Actinomycetes
Protozoa
Fungi
Algae
Virus
8.2: Role of organisms in enhancing soil fertility
inorganic transformation
Nitrogenfixation
Breakdown of toxic compound
Improvement of soil physical properties
Organic decomposition
Profile development and horizonation
Detrimental effect of soil organism
Hazardous damage
Infection and disease
8.3: Factors affecting soil organisms
Nutrient
Organic Matter
Soil pH
Soil temperature
Soil moisture
Agriculture practice
Competition among soil organism
8.5: Humus and soil organic matter (SOM)
Soil organic matter
Formation of soil matter
Dead plant, living plant and animal remain
Soil Humus
Importance of soil matter to soil and plant
8.4: Improving soil organism’ activities
Minimize soil sterilization
Maintain high organic matter
Lime the soil to value above pH 6
Avoid to contaminant
Inoculate with desired symbiotic organism
Avoid stress condition
Water-logging
Excess fertilization
Drought
Maintain optimum condition