Observe the existence of such a potential, then needed a methodappropriate for breeding the predator. The mass breeding of laboratory resultscan be used for a mass release of predatory effort in the field. The use of thepredators on the ground to suppress pest populations in accordance with the concept ofbiological control (PH), namely natural enemies play a role to maintainthe density of populations of other organisms on a population level on average morelower than average population levels without the biological control(Bosch et al. 1982).
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