How Steinernema carpocapsae nematodes will kill the fall armyworms?

When Steinernema carpocapsae nematodes are applied to the pasture fields, they will actively search for all the soil-dwelling larval and pupal stages of fall armyworms. After locating larva or pupa, nematodes will enter into their body cavity through the natural openings like anus, mouth and spiracles. In the body cavity, nematodes will release symbiotic bacteria (Xenorhabdus nematophila) in the blood where bacteria will multiply quickly, cause septicemia and kill both larva and pupa within 48 hours of infection. Thus the killing of both larvae and pupae completely stops the emergence of next generation of adult fall armyworms.