Gibberellic acid Tablet

Gibberellic acid, crystal solid.Melting poin：223-225°C (decomposition) . Solubility： Water 5g / L, soluble in methanol, ethanol, acetone, slightly soluble in ether, ethyl acetate, insoluble in chloroform. Rapidly dissolved in water (potassium salt of 50g / L), Stability： Dry gibberellic acid stable at room temperature, in an aqueous alcohol solution or decomposition, loss of activity in lye, the case of thermal decomposition .

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Commercial name：Gibberellic acid Tablet
English name：gibberellic acid tablet
Other name：Gibbereeelic，九二0，Cibao
Chemical name：2,4α,7-3 hydroxy -1- methyl -8- methylene gibberellic-3- ene-1, 10- dicarboxylic acid -1, 4 alpha lactone
Molecular formula：C₁₉H₂₂O₆
Relative molecular weight：346.38
Toxicity：According to China's pesticide toxicity grading standards, gibberellic acid is a low toxicity. Acute oral LD50 is> 15000mg / kg, general acute pesticide hazards when not occur routinely use.
Role and Benefits:
Gibberellic acid is a broad spectrum of low toxicity plant growth regulator, is one of the ubiquitous endogenous hormones in plants five plants.
Function introduction:
(1) Promote stem elongation growth
Gibberellic acid the most significant physiological effect is to promote the growth of plants, mainly it can promote cell elongation. 
(2) Induce flowering
Some higher plants flower bud differentiation is affected by day length (photoperiod) and temperature effects. For example, for a biennial plant, requires a certain number of days of cold treatment (is vernalization) to bloom, but not otherwise exhibit bolting, flowering rosette growth. If these plants without vernalization applying gibberellic acid, not by low temperature process is also able to induce flowering, and the effect is obvious. In addition, it can replace the long-day induction of flowering plants in some long days, but gibberellic acid on short-day plants flower bud differentiation without promoting differentiation for plant flower buds already, gibberellic acid to its open flower has significant promoting effect. Such as gibberellic acid can promote stevia, cycads and Cupressaceae, Taxodiaceae flowering plants.
(3) Break dormancy
With 2 ~ 3μg · g gibberellic acid treatment dormant potato can make it germinate quickly, which can meet the needs of growing potatoes several times a year. The need light to germinate seeds need low temperatures, such as lettuce seeds, tobacco, basil, plum and apple, etc., gibberellic acid can replace the light and low temperatures to break dormancy, it is because gibberellic acid can induce α- amylase, synthesis of proteases and other hydrolytic enzymes catalyze the degradation of seed storage material for embryo growth and development needs. In the beer manufacturing industry, with gibberellic acid treatment without germinating barley seed germination, can induce α- amylase production, saccharification process accelerated during brewing and lower respiratory sprout consumption, thereby reducing costs.
(4) Promote male differentiation
For dioecious flowering plants of the same strain after treatment with gibberellic acid, increasing the proportion of male flowers; For female plants dioecious plants, such as treatment with gibberellic acid, also prescribe male. In this respect the effect of auxin and gibberellic acid and ethylene opposite.
(5) Other physiological effects
Gibberellic acid can also strengthen the effect of IAA on nutrient mobilization and promoting certain plants and fruit parthenocarpy, delay leaf senescence. In addition, gibberellic acid also can promote cell division and differentiation, gibberellic acid to promote cell division is due to the shortening of the G1 and S phase. But gibberellic acid inhibited the formation of adventitious roots but which auxin are different.
ATTENTIONS: gibberellic acid is easily decomposed in alkali, so please do not compound with alkali. GA-3 water soluber formulation can not be stored for long, in case of losing activity. Please use strictky follow the recommend dosage to avoid side effect. When use to promote fruit setting, the water and fertilizer should be adequate. If compoung with some kind of plant control regulator, the effect would be better. The field that used gibberellic acid which numbers of infertile seeds increase should not apply GA₃. The safe inerval is 15 days, Please apply at most 3 times every crop season.