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Height Control in Chrysanthemum as Affected by Foliar Spray Solution pH of Several Growth Retardants

David Reed, Arthur E. Nightingale

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Abstract

Abstract At recommended rates, butanedioic acid mono-(2,2-dimethyIhydrazide) (daminozide) was the most effective in limiting height increase, α-cyclopropyl-α-(4-methoxyphenyl)-5 oyrimidine (ancymidol) was slightly less effective, and (2-chloroethyl) trimethylammonium chloride (chlormequat) had no effect compared to the controls when applied as foliar sprays to Chrysanthemum x morifolium Ramat. cv. Early Golden Hill. There was no significant effect of spray solution pH on controlling height by any of the growth retardants.

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Abstract At recommended rates, butanedioic acid mono-(2,2-dimethyIhydrazide) (daminozide) was the most effective in limiting height increase, α-cyclopropyl-α-(4-methoxyphenyl)-5 oyrimidine (ancymidol) was slightly less effective, and (2-chloroethyl) trimethylammonium chloride (chlormequat) had no effect compared to the controls when applied as foliar sprays to Chrysanthemum x morifolium Ramat. cv. Early Golden Hill. There was no significant effect of spray solution pH on controlling height by any of the growth retardants.

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Available abstract

Abstract At recommended rates, butanedioic acid mono-(2,2-dimethyIhydrazide) (daminozide) was the most effective in limiting height increase, α-cyclopropyl-α-(4-methoxyphenyl)-5 oyrimidine (ancymidol) was slightly less effective, and (2-chloroethyl) trimethylammonium chloride (chlormequat) had no effect compared to the controls when applied as foliar sprays to Chrysanthemum x morifolium Ramat. cv. Early Golden Hill. There was no significant effect of spray solution pH on controlling height by any of the growth retardants.

Key concepts: Chlormequat, Daminozide, Chrysanthemum morifolium, Limiting, Chemistry, Horticulture, Plant growth, Chloride

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