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Chemical Growth Retardation of Dicentra spectabilis (L.) Lem.1

L. C. Lopes, Thomas C. Weiler

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Abstract

Abstract A single spray application of succinic acid-2, 2-dimethylhydrazide (daminozide) at 2,500-15,000 ppm at pinch was effective in retarding growth of bleeding heart, reducing plant height 33 to 75%. A single spray or drench of (2-chlorethyl) trimethylammgrium chloride (chlormequat) had little retarding influence. Spray application of (2-chloroethyl) phosphonic acid (ethephon) had little effect on plant height, but considerably increased the number of nodes and delayed flowering.

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Abstract A single spray application of succinic acid-2, 2-dimethylhydrazide (daminozide) at 2,500-15,000 ppm at pinch was effective in retarding growth of bleeding heart, reducing plant height 33 to 75%. A single spray or drench of (2-chlorethyl) trimethylammgrium chloride (chlormequat) had little retarding influence. Spray application of (2-chloroethyl) phosphonic acid (ethephon) had little effect on plant height, but considerably increased the number of nodes and delayed flowering.

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Available abstract

Abstract A single spray application of succinic acid-2, 2-dimethylhydrazide (daminozide) at 2,500-15,000 ppm at pinch was effective in retarding growth of bleeding heart, reducing plant height 33 to 75%. A single spray or drench of (2-chlorethyl) trimethylammgrium chloride (chlormequat) had little retarding influence. Spray application of (2-chloroethyl) phosphonic acid (ethephon) had little effect on plant height, but considerably increased the number of nodes and delayed flowering.

Key concepts: Chlormequat, Daminozide, Ethephon, Succinic acid, Chemistry, Horticulture, Plant growth, Chloride

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