Insecticidal uses of Chrysanthemum

[Farhan Ahmed]

Extracts from Wikipedia

"Pyrethrum (Chrysanthemum [or Tanacetum] cinerariaefolium) is economically important as a natural source of insecticide. The flowers are pulverized, and the active components called pyrethrins, contained in the seed cases, are extracted and sold in the form of an oleoresin. This is applied as a suspension in water or oil, or as a powder. Pyrethrins attack the nervous systems of all insects, and inhibit female mosquitoes from biting. When not present in amounts fatal to insects, they still appear to have an insect repellent effect. They are harmful to fish, but are far less toxic to mammals and birds than many synthetic insecticides, except in consumer airborne backyard applications. They are not persistent, being biodegradable and also decompose easily on exposure to light. They are considered to be amongst the safest insecticides for use around food.

Sounds good, has anyone tried this or comments

[M Farooq]

Extracts from Wikipedia

"Pyrethrum (Chrysanthemum [or Tanacetum] cinerariaefolium) is economically important as a natural source of insecticide. The flowers are pulverized, and the active components called pyrethrins, contained in the seed cases, are extracted and sold in the form of an oleoresin. This is applied as a suspension in water or oil, or as a powder. Pyrethrins attack the nervous systems of all insects, and inhibit female mosquitoes from biting. When not present in amounts fatal to insects, they still appear to have an insect repellent effect. They are harmful to fish, but are far less toxic to mammals and birds than many synthetic insecticides, except in consumer airborne backyard applications. They are not persistent, being biodegradable and also decompose easily on exposure to light. They are considered to be amongst the safest insecticides for use around food.

Sounds good, has anyone tried this or comments

May be everyone has tried that because Coopex (if it is still available in Pk by this name) is made from these pyrethroids...which is chemically very similar to what is present naturally in these plants. The problem with natural insecticides is that the manufacturers cannot cope with the amounts of plants required for wide use. Chemical synthesis is far more convenient...industrially. Neem extracts are good insecticides so is nicotine from tobacco.

Regards,

Farooq