Orchid pests can be controlled with the acaricide dicofol

Also known as Kelthane. The pure product is white crystals, while the technical-grade product is a brown liquid. It is sparingly soluble in water and readily soluble in organic solvents such as acetone and xylene. It decomposes and loses effectiveness when it encounters alkaline substances. It has a strong contact-killing effect on mite eggs, larvae and nymphs. It is safe to natural enemies and has low toxicity to humans and livestock, making it an excellent selective acaricide. It is characterized by fast action and a long residual effect. Formulations: 20% emulsion, 40% emulsion. Target pests and methods of use: For red spider mites, spray a 1000-1500 times dilution of the 40% emulsion; for rust mites, spray a 1500-2000 times dilution. Because it has no systemic action and acts mainly by contact, it must be sprayed thoroughly so that the solution contacts the mites and eggs. Precautions: 1. This agent is flammable and must not be brought near sources of ignition. 2. To consider simultaneous control of multiple pests and diseases, it may be mixed with other insecticides and acaricides, but care should be taken not to mix it with alkaline pesticides. (Liu Zhongjian)