Plutella xylostella insecticides

Insecticides Vetch aphid (Megoura viciae) bollworm (Helicoverpa zea) army worm (Spodoptera littoralis) diamondback moth (Plutella xylostella) mustard beetle (Phaedon cochleariae) corn rootworm (Diabrotica undecimpunctata) whitefly Bemisia tabaci) red spider mite (Tetranychus urticae). 

Yu, S. and McCord, E., Jr., Lack of cross-resistance to indoxacarb in insecticide-resistant Spodoptera frugiperda (Lepidoptera Noctuidae) and Plutella xylostella (Lepidoptera Yponomeutidae), Pest Manag. Sci., 63, 63, 2007. 

Using 3rd instar larvae of the diamondback moth Plutella xylostella), the antifeedant and insecticidal activities of sixteen quassinoids were compared with those of known insect antifeedant chlorodimeform (= galecron), as shown in Table 16. The insecticidal activity of quassin (78) was higher than that of chlorodimeform, although its antifeedant activity was nearly identical to that of the reference compound [39]. 

Sf, Spodoptera frugiperda Px, Plutella xylostella Hv, Heliothis virescens Insecticidal potency is reported as an in ppm based on larval mortality from leaves treated with serial concentrations of the experimental compounds at 96 hours post-infestation. 

Figure 7 shows the relationship between insecticidal activity on Plutella xylostella and data from the Ca mobilization assay for a diverse structural set of anthranilic diamides. 

These compounds were tested against a series of Lepidoptera including Plutella xylostella Px, diamondback moth), Hdiothis virescens Hv, tobacco budworm), and Spodopterafrugiperda (Sf, fall armyworm). Insecticidal activity is reported in Tables I-111 as percent plant protection at various concentrations where reduction in plant damage generally resulted from insect mortality rather than cessation of feeding. 

The natural ecosystem maintains a delicate balance between pests and predators. Pest insects can be controlled by the artificial release of predators. One example is a parasitic wasp, Diadegma insulare. The adult female wasp lays eggs in a Plutella xylostella larva and pupates inside the cocoon of the mature larva. This and other insect predators are available commercially, but the usage is limited. Protozoa and nematodes are also used in insect pest control. One example of a protozoan that effectively infects locusts and controls the population is Nosema locustae. A commercially available nematode insect control agent is Steinemema carpocapsae. This nematode parasitizes scarab larvae with a symbiotic Photorhabdus bacterium that produces insecticidal toxins. 

The delivery vehicle of fenvalerate-containing insecticides may account for wide variations in toxic action. For example, fenvalerate microcapsules used to control caterpillar pests (Plutella xylostella, Spodoptera liturd) were most effective with tMn-walled capsules and small particles however, significant protection of nontarget organisms, such as fish, occurred with thicker-walled capsules and larger particles. The popularity of commercial synthetic pyrethroids and their widespread replacement of older, more-toxic compounds in various settings... 

Acetamiprid (2) is a broad-spectrum insecticide that is ovicidal and larvicidal against a wide range of sucking insects such as Hemiptera (especially aphids) or adults of Thysanoptera, Isoptera and Coleoptera pests. It has contact, stomach and systemic long-lasting action and is moderately activity against Lepidoptera such as the peach fruit moth Carposina niponensis), the oriental fruit moth Grapholita molesta), and the diamond back moth Plutella xylostella) and has ovicidal effects on these species as well (Table 29.2.1.6) [29]. 

Pyridalyl controls a wide variety of lepidopterous pest strains such as the diamondback moth (Plutella xylostella) which is resistant to various existing insecticides (8). This insecticide is also effective against thysanopterous pests. Moreover, it does not exert an adverse effect on various beneficial arthropods such as natural predator insects (e.g., Oristar-A ) and honeybees. Therefore, this novel insecticide is expected to be a usefiil material for controlling lepidopterous and thysanopterous pests in IPM and insecticide resistant management programs. 

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