discuss the role of natural enemy in combating the different pest and disease of forage
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discuss the role of natural enemy in combating the different pest and disease of forage
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There are many natural enemies that reduce the numbers of stored-product insect pests. For 13 natural enemy and 19 insect pest species, natural enemies reduced the insect pest populations by 70 to 100% (Hagstrum and Subramanyam 2006). These natural enemies are self-perpetuating.Natural enemies of insect pests fall into three categories: general predatory insects, parasitic insects, and insect pathogens (fungi, bacteria, viruses, or nematodes). Predatory insects are usually much larger than their prey.Natural enemies play an important role in limiting the densities of potential pests. ... Conversely, when a non-toxic method is found to control a key pest, the reduced use of pesticides and increased survival of natural enemies frequently reduces the numbers and damage of formerly important secondary pest species.