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Cards In This Set
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Is soil alive or dead?
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Alive
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What are soils characterized by?
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Organic material present, mineral composition, and particle size
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What is the function of most soil bacteria?
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Decomposers, they break downand recycle organic material in the soil and improve soil agronomic productivity
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What is agronomic activity good for?
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Cycling of carbon compounds like grass clippings, leaf litter and dead animals
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True of False, some soils have a relationship with plants
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True
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What is Rhizobium and what is its function?
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Lives within plant roots and fix nitrogen, they convert atmospheric N2 into an organic form of nitrogen
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What is the limiting element in most soils?
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Nitrogen
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What are chemolithotrophic bacteria important for?
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Phosphorus and nitrogen cycling
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What members of the soil community are medically important?
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Actinomycetes
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What do actinomycetes produce?
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Antibiotics
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What give soil its earthy scent?
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Actinomycetes
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What do Actinoycetes break down?
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Complex carbs cellulose and chitin
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Are fungi numerous in soils?
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Yes
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What is the function of fungi?
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Decomposers, they break down organic molecules and other compounds back into the soil
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Soil Fungus do what to soil structure and improve what 2 things?
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Modify and improve water and nutrient retention, soil fungi can also serve as parasites and pathogens.
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