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Its use in the control of malaria-transmitting mosquitos is under investigation. [2] As an insecticide, the spores are sprayed on affected crops as an emulsified suspension or wettable powder or applied to mosquito nets as a mosquito control agent. As a species, B. bassiana parasitizes a very wide range of arthropod hosts.
The 2024 IRAC poster of insecticide modes of action includes the majority of chemicals listed below. [5] The pesticide manual provides much information on pesticides. [6] [7] Many of the insecticides in the list are not in use.
Pymetrozine is an insecticide in the pyridine-azomethine chemical class, primarily utilized for controlling homopteran pests, such as aphids and whiteflies, in agricultural settings. [ 2 ] [ 3 ] Its mode of action selectively targets the feeding behavior of sap-feeding insects, causing them to cease feeding soon after ingestion.
A biopesticide is a biological substance or organism that damages, kills, or repels organisms seens as pests. Biological pest management intervention involves predatory, parasitic, or chemical relationships. They are obtained from organisms including plants, bacteria and other microbes, fungi, nematodes, etc.
The term "biological control" was first used by Harry Scott Smith at the 1919 meeting of the Pacific Slope Branch of the American Association of Economic Entomologists, in Riverside, California. [3] It was brought into more widespread use by the entomologist Paul H. DeBach (1914–1993) who worked on citrus crop pests throughout his life.
The biological activity of a pesticide, be it chemical or biological in nature, is determined by its active ingredient (AI - also called the active substance). Pesticide products very rarely consist of the pure active ingredient. The AI is usually formulated with other materials (adjuvents and co-formulants) and this is the product as sold, but ...
Pyrethrin is most commonly used as an insecticide and has been used for this purpose since the 1900s. [18] In the 1800s, it was known as " Persian powder ", "Persian pellitory", and "zacherlin". Pyrethrins delay the closure of voltage-gated sodium channels in the nerve cells of insects, resulting in repeated and extended nerve firings.
Pyrethroids are used as commercial and household insecticides. [1] In household concentrations pyrethroids are generally harmless to humans. [1] However, pyrethroids are toxic to insects such as bees, dragonflies, mayflies, gadflies, and some other invertebrates, including those that constitute the base of aquatic and terrestrial food webs. [2]