Sounds like most artificial treatments...some advantages and disadvantages.
--
Reka

I don't give a damn for a man that can only spell a word one way.
Mark Twain (1835 - 1910)
http://www.rolbox.it/hukari/index.html

Gibberellic acid and cytokinin (separate or combined) are not effective in
triggering the onset of the flowering process in Phalaenopsis at high and
non-inductive temperatures.
http://primera.tamu.edu/orchids/symposium2000.htm

The effect of injection of high concentrations of 6-benzyladenine (BA) into
pseudobulbs (stems) of Dendrobium Jaquelyn Thomas ' Uniwai Princess' was
evaluated. The flowering cycle for mature plants of Dendrobium Jaquelyn
Thomas is production of one new pseudobulb per year with fall and early
winter flowering on leaved pseudobulbs in their first year (1-yr) of growth
and summer and fall flowering on almost leafless pseudobulbs in their second
year (2-yr) and subsequent years. Pseudobulb injections made in November
caused the growth of dormant lateral buds into inflorescences (sprays) that
flowered in February in the spring off-season. Injection of 100 mM BA into
1-yr stems resulted in a significant increase in flower spray production
over control non-treated stems, 8.92 vs. 0.52, respectively. Injection of
100 mM and 10 mM BA solutions into 2-yr stems also resulted in a significant
increase in flower spray production over controls, 6.32 and 4.00, vs. 0.24,
respectively. The high concentrations of BA also significantly reduced
inflorescence length and caused development of abnormally formed flowers.
Addition of gibberellic acid (GA) to the injection solution significantly
increased inflorescence length and reduced the percentage of abnormally
formed flowers. Timing of injection for year around production of Hawaiian
dendrobium cut flower sprays is discussed.
http://www.actahort.org/books/541/541_30.htm

Functions of Gibberellins
Active gibberellins show many physiological effects, each depending on the
type of gibberellin present as well as the species of plant. Some of the
physiological processes stimulated by gibberellins are outlined below
(Davies, 1995; Mauseth, 1991; Raven, 1992; Salisbury and Ross, 1992).
Stimulate stem elongation by stimulating cell division and elongation.
Stimulates bolting/flowering in response to long days.
Breaks seed dormancy in some plants which require stratification or light to
induce germination.
Stimulates enzyme production (a-amylase) in germinating cereal grains for
mobilization of seed reserves.
Induces maleness in dioecious flowers (sex expression).
Can cause parthenocarpic (seedless) fruit development.
Can delay senescence in leaves and citrus fruits.
http://www.plant-hormones.info/gibberellins.htm

For stimulating side-shoots in Nepenthes spp., orchids, etc. a small amount
of GA3 can be rubbed into a nick on the stem, or may be applied mixed with
lanolin to provide a weatherproof seal around the cut. Exact dosage is not
critical, as the GA3 will degrade over the course of a few weeks.
http://www.flytrap.demon.co.uk/cc/data/ga3.htm

Chen, J. T. and W. C. Chang. 2003a. Effects of GA3, ancymidol, cycocel and
paclobutrazol on direct somatic embryogenesis of Oncidium in vitro. Plant
Cell Tiss. Org. Cult. 72:105-108.
http://botany.sinica.edu.tw/english/...nel/120-n.html


"profpam" schrieb im Newsbeitrag
...
The Press Enterprise article (2/28/04) -- Plant Food Makes Massive
Impression -- cites a new product --MegaGro, containing Gibberellic
acid.

Has anyone used this product on orchids?

. . . Pam
Everything Orchid Management System
http://www.pe.net/~profpam/page3.html


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