M., 1982: Regulations for the enforcement of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) exemption from regulation of certain biological control agents. Gaugler, R., 1991: Predictability in biological control using entomopathogenic nematodes. (eds.), 1990: Entomopathogenic nematodes in biological control. M., 1979: Nonsusceptibility of rates of the entomogenous nematodes, Neoaplectana carpocapsae. H., 1994: Interaction between entomopathogenic nematodes and Bacillus thuringiensis: a new approach for biological control of insects. kurstaki for suppression of the Artichoke Plume Moth (Lepidoptera: Pterophoridae).

K., 1984: Evaluation of the entomogenous nematode Neoaplectana carpocapsae (=Steinernema feltiae) Weiser (Rhabditida: Steinernematidae) and the bacterium Bacillus thuringiensis Berliner var. L., 1993: Insect pests in Egypt and Arab countries and their controlling methods. M., 1985: Biological control of some lepidopterous pests by the nematodes Neoaplectana carpocapsae and the physiological changes associated with it.

W., 1925: A method of computing the effectiveness of an insecticide. The present results indicated that nematodes could be used successfully against the black cutworm, Agrotis ipsilon larvae during the winter which is the active season of this insect pest in Egypt.Ībbot, W. Combined effect of both the nematodes and the bacteria did not result in significantly greater control than that achieved by the nematodes used alone. Units/mg) gave significant larval control after 12 days of bacterial infection. The highest concentration of the bacterium B. Generally, nematode concentration of ca 500 infective juveniles/insect vial was highly effective (100% mortality) within nine days post nematode infection. bacteriophora had a more promising control levels than that of B.

The two biocontrol agents influenced Agrotis ipsilon differently where H. The experiment was conducted under 15.7 ☌ (14 to 19 ☌) to simulate the average winter temperature in Egypt. kurstaki were tested in the laboratory against the black cutworm, a widely distributed polyphagous insect pest of vegetables and field crops. The entomopathogenic nematode Heterorhabditis bacteriophora Pionar (HP 88) and the bacterium Bacillus thuringiensis Berliner var.

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