Low rate application of inhibitors of ethylene biosynthesis...

A - Human Necessities – 01 – N

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A01N 37/16 (2006.01) A01N 37/36 (2006.01)

Patent

CA 2193879

The method of the invention provides for improvement of a plant growth factor byapplying an ethylene inhibitor plant growth regulator to a plant, such as cotton or soybean, at a low rate. Specific plant growth regulators include compounds covered by the general formula: (I) (see fig. I) or (see fig. I) (II) where R1 and R2 independently of one another are C1-C6-alkyl, n is 2 or 3 and R3 is hydrogen or C1-C6 alkyl. Specific compounds employed by the method of the invention include{[(isopropylidene)-amino]oxy}-acetic-acid-2-(methooxy)-2-oxoethyl ester, {[(isopropylidene)-amino]oxy}-acetic acid-2-(hexyloxy)-2-oxoethyl ester, {{cyclohexylidene)-amino]oxy}-aetic acid-2-(isopropyloxy)-2-oxyethyl ester, [((isopropylidene)amino]oxy acetic acid and aminooxyacetic acid.

La méthode de l'invention représente une amélioration d'un facteur de croissance végétale, grâce à l'application à faible taux d'un régulateur de croissance végétale, inhibiteur d'éthylène, à des plantes comme le cotonnier ou le soya. Parmi les régulateurs spécifiques de croissance végétale on compte les composés couverts par la formule générale (I) (voir fig. I) ou (II) (voir fig. II), où R1 et R2 sont, indépendamment l'un de l'autre, des alkyles C1-C6, n posséde la valeur 2 ou 3, et R3 est de l'hydrogène ou un alkyle C1-C6. Parmi les composés spécifiques utilisés dans la méthode, on peut citer les suivants : acide {¢(isopropylidène)amino!oxy}acétique, ester 2-(méthoxy)-2-oxoéthylique, acide {¢(isopropylidène)-amino!oxy}acétique, ester 2-(hexyloxy)-2-oxoéthylique, acide {¢cyclohexylidène)-amino!oxy}acétique, ester 2-(isopropyloxy)-2-oxyéthylique, acide { ¢(isopropylidène)amino!oxy}acétique, acide aminooxyacétique.

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