Methods and compositions for regulating plant growth using piperazine compounds
AssigneeBayer Aktiengesellschaft
InventorsKlaus Naumann, Klaus Lurssen, Klaus Sasse, Ulrich Holtschmidt, Gunter Schwarzmann
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Abstract
Piperazine derivatives of the general formula ##STR1## in which R.sup.1, R.sup.2, and R.sup.3, independently of one another, are each optionally substituted alkyl, optionally substituted alkenyl, alkynyl, cycloalkyl or aralkyl which is optionally substituted in the aryl part, and N is 0, 1, 2, 3, or 4, Exhibit powerful plant growth-regulating properties.
Claims44
A plant-growth-regulating composition having an agriculturally acceptable carrier and, in an amount, sufficient to exert plant-growth regulating effects, an active ingredient comprising a piperazine compound of the general formula ##STR29## wherein R.sup.1, R.sup.2, and R.sup.3 are individually selected from alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl or cycloalkyl,
- n is 0, 1, 2, 3, or 4.
Plant-growth-regulating composition as claimed 1 wherein R.sup.1 is alkenyl of up to 4 carbon atoms.
Plant-growth-regulating composition as claimed in clam 1 wherein R.sup.3 in the formula is alkyl of 1 to 6 carbon atoms.
Method of inhibiting growth of plants which method comprises applying to the plants of their habitat effective amounts of a piperazine compound of the formula ##STR30## herein R.sup.1, R.sup.2, and R.sup.3 are individually selected from alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, cycloalkyl, aralkyl or substituted aralkyl substituted in the aryl part, and
- n is 0, 1, 2, 3, or 4.
Dependencies are inferred from the claim text.