Slow-release Growth Retardant Tablets for Potted Plants

Autor: Kenneth C. Sanderson, Willis C. Martin, R. Bruce Reed
Rok vydání: 1989
Předmět:
Zdroj: HortScience. 24:960-962
ISSN: 2327-9834
0018-5345
DOI: 10.21273/hortsci.24.6.960
Popis: The growth retardants ancymidol, flurprimidol, and chlormequat chloride were incorporated into plaster of paris tablets and compared to drenches on various plants. Ancymidol tablets were as effective as drenches in controlling height and increasing racemes of Clerodendrum thomasoniae Balf. (southern bleeding heart). Drenches of ancymidol and flurprimidol reduced the height of Lilium longiflorum Thunb. (Easter lily) more than tablets; flurprimidol reduced Lilium height more than ancymidol. Tablets reduced the height of Euphorbia pulcherrima Willd. ex Klotzsch (poinsettia) cvs. Topstar and V-14 Glory, but not C-1 Red. Ancymidol drenches produced shorter ‘C-1 Red’ and ‘V-14 Glory’ plants than tablets. Tablets reduced bract diameter more than drenches. Flurprimidol tablets produced the smallest bracts. Chemical names used: α-cyclopropyl-α-(4-methoxyphenyl)-5-pyrimidinemethanol (ancymidol); α-(1-methylethyl)-α-[4-(trifluoromethoxy)phenyl]-5-pyrimidinemethanol (flurprimidol); 2-chloro-N,N,N-trimethylethanaminium chloride (chlormequat chloride); butanedioic acid mono(2,2-dimethylhydrazide) (daminozide).
Databáze: OpenAIRE