Pyrethrin and pyrethrum are two terms that are often used interchangeably, but there is a difference between the two. Pyrethrum refers to the natural insecticide that is derived from the dried flowers of certain species of chrysanthemum plants, specifically Chrysanthemum cinerariifolium and Chrysanthemum coccineum. On the other hand, pyrethrin is the name given to the six individual chemicals that have insecticidal properties and are found in the pyrethrum extract.
The use of pyrethrum as an insecticide dates back to around 1800 in Asia, where it was initially discovered to be effective in killing ticks. Over time, its insecticidal properties against other insects such as fleas and mosquitoes were also recognized. This natural insecticide gained popularity due to its effectiveness and relatively low toxicity to humans and animals compared to other synthetic insecticides.
Pyrethrum extract contains a mix of the six active insecticidal compounds known as pyrethrins. These compounds are pyrethrin I, pyrethrin II, cinerin I, cinerin II, jasmolin I, and jasmolin II. Each of these compounds has its own insecticidal properties and together they provide a broad-spectrum insect-killing effect.
One of the advantages of using pyrethrum extract is that it breaks down quickly in the environment, minimizing its impact on non-target organisms. It is also less likely to develop resistance in insects compared to synthetic insecticides. However, it is important to note that some insects have developed resistance to pyrethrum over time, highlighting the need for proper rotation and integrated pest management strategies.
In terms of application, pyrethrum extract is commonly used in the form of sprays or dusts. It can be applied directly to plants to control a wide range of pests, including aphids, mites, caterpillars, and beetles. It can also be used indoors to combat household pests such as flies, mosquitoes, and cockroaches. However, it is important to follow the instructions on the product label and use it responsibly to avoid any harm to beneficial insects such as bees and ladybugs.
Personally, I have used pyrethrum-based insecticides in my own garden to control aphids and other pests on my vegetables and ornamental plants. I found it to be effective in reducing the insect populations without causing any noticeable harm to the plants or other beneficial insects. It provided me with peace of mind knowing that I was using a natural and relatively safe option for pest control.
Pyrethrum is the natural insecticide derived from certain species of chrysanthemum flowers, while pyrethrin refers to the six individual chemicals found in the pyrethrum extract. Pyrethrum has been used for centuries to control various insects and is valued for its effectiveness and relatively low toxicity. The active insecticidal compounds in pyrethrum, known as pyrethrins, provide a broad-spectrum insect-killing effect. It is important to use pyrethrum responsibly and follow the product instructions to ensure effective and safe pest control.
