Plant Growth Regulator – POWERGIBB
Gibberellic Acid 20%

Common Name: Gibberellic Acid
Chemical Name: (1α,2β,4aα,4bβ,10β)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-3 ene-1, 10-carboxylic acid 1,4a-lactone.
CAS No.: 77-06-5
Appearance: Light Yellow Colored Liquid
Melting point: 210-235°C (Technical)

STRUCTURAL FORMULA




Uses:
POWERGIBB is used during the production of fruits and vegetables most commonly to improve fruit setting of clementines and pears (especially William pears); to loosen and elongate clusters and increase berry size in grapes; to control fruit maturity by delaying development of the yellow colour in lemons; to reduce rind stain and retard rind ageing in navel oranges; to counteract the effects of cherry yellows virus diseases in sour cherries; to produce uniform seedling growth in rice; to promote elongation of winter celery crop; to induce uniform bolting and increase seed production in lettuce for seed; to break dormancy and stimulate sprouting in seed potatoes; to extend the picking season by hastening maturity in artichokes; to increase the yield in forced rhubarb; to increase the malting quality of barley; to produce brighter-coloured, firmer fruit, and to increase the size of sweet cherries; to increase yields and aid harvesting of hops; to reduce internal browning and increase yields of Italian prunes; to increase fruit set and yields of tangelos and tangerines; to improve fruit setting in blueberries; to advance flowering and increase the yield of strawberries; and also a variety of applications on ornamentals.

Mode of action:
Acts as a plant growth regulator on account of its physiological and morphological effects in extremely low concentrations. Translocated, Generally affects only the plant parts above the soil surface.

Compatibility:
Incompatible with alkaline materials and solutions containing chlorine. Do not combine with alkaline sprays (lime sulfur).

Toxicology:
Acute oral LD50 for rat and mouse > 1500mg/kg. Non-irritating to skin and eyes. Inhalation LC50 : No adverse effect on rats subjected to 400mg/1 exposure, 2 h/d for 21 days. NOEL dose (diet 6d/week, 90d) for rat and dog >1000mg/kg. LC50 for carp(48h) >100ppm,water flea 850 ppm.