Mass production in liquid culture of insect-killing nematodes
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United States of America Patent
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Jun 11, 1991
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Nov 20, 1987
filing date -
Nov 20, 1987
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Abstract
Entomogenous nematodes can be used as biological insecticides for the control of certain pests. The present invention provides a large-scale production in liquid culture of these entomogenous nematodes using an improved liquid culture medium. The medium uses an emulsifier to provide a well homogenized growth medium. The invention also provides a method of cultivating entomogenous nematodes on a commercial scale, in liquid culture, in fermenters by controlling the agitation rate as a function of oxygen demand.
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