Pyriproxyfen, also known as pyriproxyfen and pyriproxyfen, is a class of alkoxypyridine juvenile hormone-type chitin synthesis inhibitors created and developed by Japan's Sumitomo Chemical Company in 1983.
Pyriproxyfen was first registered as a sanitary pest in 1989, commercialized in 1991, and registered as an agricultural pest control in 1995.
In 2007, pyriproxyfen was officially registered in China. With the expansion of its application scope and the continuous development of its mixtures, granules, as the most common formulation of pyriproxyfen, were used in the control of mosquito and fly larvae, and interfered with mosquitoes, flies and midges. , gnats and other vector pests larvae development, in order to achieve the purpose of pest control.
In the past three years, pyriproxyfen has been widely used in the control of whitefly and scale insects on fruits, vegetables, cotton and ornamental plants.
Application and Synthesis Process
Pyriproxyfen has a wide control spectrum and is effective against thrips, aphids, whiteflies, and scale insects. When farmers use pyriproxyfento control scale insects, they can also kill a variety of pest eggs, such as aphids, psyllids, leaf miners and other pests that often occur on fruit trees. There is a good control effect.
Pyriproxyfen has high ovicidal activity, including direct ovicidal and indirect ovicidal. Adults do not lay eggs or do not hatch after contact, so in orchards where pyriproxyfen is used, the incidence of pests is relatively small.
Pyriproxyfen has a long lasting effect on scale insects, and after spraying pyriproxyfen, the lasting effect is 7-10 days.
Pyriproxyfenhas strong practicability, low drug cost, and particularly good compoundability, and can be mixed with most pesticide products.
The synthesis process of pyriproxyfen uses p-hydroxydiphenyl ether as raw material, reacts with propylene oxide or 1-chloro-2-propanol under alkaline conditions to obtain 1-(4-phenoxyphenoxy)-2 -Propanol (PPP), and then condensed with 2-chloropyridine to obtain pyriproxyfen.
Pyriproxyfen SWOT Analysis
1. Strengths: The unique ovicidal activity of pyriproxyfen has a long lasting effect, saving labor costs, low cost of medication, and good compatibility with nicotine, spirotetramat and other products.
2. Weaknesses: The quick-acting property is poor, so it must be compounded with quick-acting products such as emamectin, nicotine, and pyrethroids.
3. Opportunities: In recent years, the demand for control of scale insects and whitefly in the southern fruit tree area has been relatively strong, and the market is in an incremental stage.
4. Threats: Most preparation manufacturers have hygienic registrations, but fewer insecticide registrations.
Future trends and market outlook
Pyriproxyfen has been commercialized for more than 30 years. As a hygienic drug, it still has a good effect on the control of mosquitoes and flies.
In terms of pesticides, pyriproxyfen is widely used in the control of whitefly and scale insects on fruits, vegetables, cotton and ornamental plants. The combination of pyriproxyfen and nicotine can effectively improve the lasting time of nicotinic insecticides and reduce the risk of resistance; the combination of pyriproxyfen and spirotetramat has a good prospect in the control of whitefly.
