Use of aromatic aldehydes as pesticides

Details Use of aromatic aldehydes as pesticides Use of aromatic aldehydes as pesticides

A - Human Necessities

01

N

A01N 35/02 (2006.01) C12N 15/82 (2006.01) C12P 7/24 (2006.01) C12P 17/06 (2006.01)

Patent

CA 2208755

Methods and compositions based upon natural flavonoid aldehydes, including cinnamic aldehyde, .alpha.-hexyl cinnamic aldehyde, and coniferyl aldehyde are provided, which find use as pesticides. The compositions are effective against pathogenic fungi, arachnids and insects at concentrations which are not phytotoxic to the treated host plant. Infestations of a variety of plant parts can be treated, including those of leaves, seeds, seedlings, fruit, flowers and roots. Susceptible organisms include rust, powdery mildew, botrytis, phylloxera, aphids, thrips, codling moth, nematodes and leaf hoppers.

L'invention concerne des procédés et des compositions à base d'aldéhydes flavonoïdes naturels, y compris l'aldéhyde cinnamique, l'aldéhyde cinnamique .alpha.-hexyle et l'aldéhyde coniféryle, utiles comme pesticides. Ces compositions sont efficaces pour combattre des champignons, des arachnides et des insectes pathogènes à des concentrations non phytotoxiques pour les plantes hôtes ainsi traitées. On peut traiter de cette façon différentes parties infectées des plantes, y compris les feuilles, les graines, les plantons, les fruits, les fleurs et les racines. Les organismes sensibles comprennent la rouille, l'oïdium des céréales, le botrytis, les phylloxeras, les pucerons, les thysanoptères, la pyrale des pommes, les nématodes et les cicadelles.

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