The Activity of Earthworms in Soil (Leaving Cert Agricultural Science): Flashcards
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Practise the cards
10 cards from this deck
Bioturbation
Bioturbation
Biological mixing of soil layers
Photophobic
Photophobic
Avoiding light
Wormery observation period
Wormery observation period
7-10 days
Purpose of control in wormery experiment
Purpose of control in wormery experiment
Show changes are due to earthworm activity, not other factors
Earthworm castings
Earthworm castings
Earthworm waste products, nutrient-rich pellets
Optimal temperature for wormery
Optimal temperature for wormery
10-15°C
Wormery layer thickness
Wormery layer thickness
2-3 cm
Main aim of wormery experiment
Main aim of wormery experiment
Observe earthworm movement & organic matter breakdown in soil
Effect of overwatering on earthworms
Effect of overwatering on earthworms
Creates anaerobic conditions harmful to earthworms
Earthworm castings vs surrounding soil
Earthworm castings vs surrounding soil
Higher pH & nutrient content