In these experiments the application timing in various plant developmental stages was also studied. the results show a significant, positive response in the parameters of stem length, pedicel length, flower head and fresh weight. in these experiments positive results were obtained, showing a significant extension of stem length (3-8 cm), as well as advanced floweringin a few days.ĭuring the years 2005-2006, semi-commercial experiments and observations were performed with the leading rose cultivars. application of the paste by smearing was found as the best method which did not impair flower or stem quality. paste formulation was examined in various application methods. In early observations performed during 2004 in israel, the efficacy of the t.o.g.
the immediate significance of such a treatment is a higher contribution to the grower’s profit. nowadays, with the increasing demand for producing and marketing of high quality flowers, the use of pgr with such positive effects on flower head size and stem length without reducing crop yield is veryimportant. application of gibberellins in various experiments performed during the recent years in israel and abroad resulted in increased flower head and stem elongation. These experiments showed that gibberellins play an important role in processes of differentiation, growth, cell elongation and anthocyanin biosynthesis in the plant. numerous experiments were performed in roses to examine the effect of endogenous pgr, such as auxin, cytokinin, gibberellin and ethylene on plant growth. Plant growth regulators, which control plant physiological functions and developmental processes, are widely used in various plantcrops and are well known in agriculture. penetration of the pgr into the plant tissues increases cell dimensions, elongates treated stems, and increases rose flower head size.
the paste is smeared gently moving the brush width (only 1 cm) uniformly around the flower’s stem or on the bud’s pedicel, according to the purpose of use. a slight squeeze of the tube will lead paste toward the brush for application. the formulationis packed in a tube including a suitable brush for application. paste contains a systemic plant growth regulator (pgr) with gibberellin activity (gibberellic acid – ga3), which can elongate stems and increase the flower head size of cut roses.
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