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Moths Ryania

Rya.nia., The root and stem of the plant yania speciosa family Flacourtiaceae, native to South America, contain from 0.16—0.2% of iasecticidal components, the most important of which is the alkaloid ryanodine [15662-33-9] C25H250 N (8) (mp 219—220°C). This compound is effective as both a contact and a stomach poison. Ryanodine is soluble ia water, methyl alcohol, and most organic solvents but not ia petroleum oils. It is more stable to the action of air and light than pyrethmm or rotenone and has considerable residual action. Ryania has an oral LD q to the rat of 750 mg/kg. The material has shown considerable promise ia the control of the European com borer and codling moth and is used as a wettable powder of ground stems or as a methanohc extract. Ryanodine uncouples the ATP—ADP actomyosia cycle of striated muscle. [Pg.271]

Ryania is made from the ground roots of the tropical shrub Ryania speciosa. The active principle of ryania is the alkaloid ryanodine (C25H35NOu). Ryania is used for controlling aphids, cabbage loopers, Colorado potato beetles, diamondback moths, cucumber beetles, leafhoppers, corn earworms, European corn borers, codling moths, citrus thrips, and so on. Its oral LD30 in rats is 1200 mg/kg so it is practically nontoxic to mammals. [Pg.53]

LARVICIDAL EFFECT OF RYANIA (NOT PERMITTED FOR USE IN THE EU AT PRESENT). This alkaloid is also very effective against the larvae of the codling moth. The advantage of Ryania is its broad spectrum of action, allowing control of other caterpillars (tortrix moths, etc.) as well as codling moth. [Pg.157]

Areas of application Mode of action How obtained Remarks Codling moths, tortrix moths, aphids, leaf miners Contact insecticide Ryania is obtained from the wood of Ryania speciosa Broad spectrum of action More persistent than pyrethrum-rotenone sprays Poisonous to fish Not registered in the EU at present... [Pg.215]

Ryanodine is the active, insecticidal ingredient of a tropical shrub Ryania speciosa). For years, this botanical insecticide has been recommended for use against citrus thrips, corn earworms, European corn borers, codling moths, and a variety of other pests. However, ryania is also quite toxic to mammals and water life. For this reason, it s better to rely on safer pest control measures,. such as iasecticidal soap, neem, or pyrethrin. [Pg.482]

Quinolizidine alkaloids are found in many species of the Fabaceae, Ber-beridaceae, Leguminosae, and Solanaceae and are derived from lysine (67, 68). Some quinolizidine alkaloids are very toxic insecticides that have the potential of commercial use for the control of insects. For example, the alkaloid ryanodine, which is found in the stems and roots of Ryania speciosa, is effective as both an insect contact and stomach insecticide and is particularly effective against Lepidoptera. It has been used to control the codling moth without affecting parasites and predators of the moth (69). [Pg.162]

Ryanodine [15662-33-6] is the active ingredient of the roots of Ryania speciosa, (Flacourtiaceae). It is more stable against sunlight and air than pyrethrum and rotenone and is used for codling moth control. [Pg.149]


See other pages where Moths Ryania is mentioned: [Pg.563]    [Pg.130]   
See also in sourсe #XX -- [ Pg.157 , Pg.159 , Pg.215 ]




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