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Effect of adjuvants on the growth of ornamental shrubs treated with GA3 and paclobutrazol

Mieczysław Grzesik

Research Institute of Pomology and Floriculture
Waryńskiego 14c, 96-100 Skierniewice, Poland

The effect of seven adjuvants, used alone or with either GA3 or paclobutrazol, on the growth of Chamaecyparis lawsoniana ‘Ellwoodii’, Juniperus communis ‘Hibernica’, Weigela florida ‘Styriaca’ and Forsythia ‘Maluch’ was examined.

The applied chemicals (Regulaid, Agridex, Falimorph, PP-222, Atplus 411F, Nopon, Sandovit) increased the effect of GA3 or paclobutrazol on the growth of investigated shrubs. Although the effectiveness of particular adjuvants was similar, adjuvants when used alone, without growth regulators, had no effect on the growth of shrubs.

Grzesik M., 1990. Effect of adjuvants on the growth of ornamental shrubs treated with GA3 and paclobutrazol. Folia Horticulturae II/1: 95-101.