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Insecticidal soap is used to control many plant insect pests. Soap has been used for more than 200 years as an insect control. [1] Because insecticidal soap works on direct contact with pests via the disruption of cell membranes when the insect is penetrated with fatty acids, the insect's cells leak their contents causing the insect to dehydrate and die. [2]
Horticultural oils are prepared from crude petroleum fractions by distillation and various chemical processes. [1] [2] [3] This removes or hydrogenates the unsaturated (alkene and aromatic) molecules, which cause plant damage (phytotoxicity), and delivers the C20-C25 fractions, which are the most effective insecticides.
If the infestation calls for an insecticide, lower toxicity ones such as horticultural oils and insecticidal soaps can provide control with little residual effects. Contact insecticides such as ...
Treat with insecticidal soap, neem oil, or horticultural oil. Cover every surface of foliage on both top and bottom, says Khan. Re-treat according to label directions, ...
The essential oils of many plants are also well known for their pest-repellent properties. Oils from the families Lamiaceae (mints), Poaceae (true grasses), and Pinaceae (pines) are common haematophagous insect repellents worldwide.
Applications of pesticides, such as less toxic insecticidal soaps and oils, can also be effective in controlling SLF nymphs at this time. Later this fall and winter, areas near known infestations ...