Assertion: oyster | /r/HasProperty | harvested with two steel dredges
Facets:
value: in an extensive manner
type: MANNER
value: usually
type: TEMPORAL
Source sentences:
text: Harvesting techniques Since most flat oyster culture is developed in subtidal areas and in an extensive manner to avoid disease problems, oysters are usually harvested with two steel dredges about 3.5-4 m wide and 2 m deep with 3-5 cm teeth blades, operated by hydraulic or pneumatic winch.
text: Since most flat oyster culture is developed in subtidal areas and in an extensive manner to avoid disease problems, oysters are usually harvested with two steel dredges about 3.5-4 m wide and 2 m deep with 3-5 cm teeth blades, operated by hydraulic or pneumatic winch.