Lepidopteran-active strain

Toxicity to house fly is obviously quite good. Moderate efficacy is demonstrated against the corn rootworm beetles and mosquito larvae. For an insecticide of the prolan/DDT class, the potency demonstrated against the wild strain German cockroach is quite remarkable. Preliminary tests on the larval stage corn rootworm revealed soil activity of a monochloro compound, unlike most previously reported chemicals in this class. Overall, the spectrum of activity is quite broad, although other categories of insect pests must still be tested (e.g., lepidopteran larvae). 

In summary, the complexity of the HD-1 strain can be stated as follows it contains at least four insecticidal toxin genes, three of the PI type (that specify proteins active on lepidopteran insects and are of high molecular weight) and a P2 gene (whose protein is much smaller and has bifunctional activity on both lepidopteran and dipteran insects). These... 

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