Customization: | Available |
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CAS No.: | 77-06-5 |
Formula: | C19H22O6 |
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Product Name | Gibberellin GA3 |
Chemical Name | (1a,2b,4aa,4bb,10b)-2,4a,7-trihydroxy-1-methyl-8-methylenegibb-3-ene-1,10-dicarboxylic acid 1,4a-lactone |
Cas NO. | 77-06-5 |
Specification | 95% TC, 20% SP, 10% TB |
Empirical Formula | C19H22O6 |
Toxicology | Oral Acute oral LD50 for rats and mice >15 000 mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Non-irritating to skin and eyes. Inhalation No ill-effect on rats subjected to 400 mg/l for 2 h/d for 21 d. NOEL (90 d) for rats and dogs >1000 mg/kg diet (6 d/w). Toxicity class WHO (a.i.) U |
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. |
Uses | Has a variety of applications, e.g. 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. Application rates up to 80 g/a per application, depending on desired effect. |
Cucumber | 50-100mg/L, spray on flowers | Improve fruit setting; produce bigger fruits |
Eggplant | 10-50mg/L, spray on flowers | |
Tomato | 10-50mg/L, spray on flowers | |
Cotton | 20mg/L, foliar spray | |
Grape | 20-50mg/L, spray on fruit cluster | |
Citrus | 20-40mg/L, spray on flowers | |
Pine apple | 40-80mg/L, spray on flowers | |
Rice | 30-40mg/L, foliar spray at stem elongation stage | Improve vegetative growth |
Celery | 50-100mg/L, spray whole plant at 15d before harvest 2 times with 3-5d interval | |
Spinach | 10-30mg/L, foliar spray at 20d before harvest 2 times with 3-5d interval | |
Lettuce | 20mg/L, foliar spray at 14-leaf stage 2 times with 3-5d interval | |
Potato | 0.5-1mg/L, tuber treatment for 30min | Improve seed germination; break dormancy |
Barley | 1mg/L, seed treatment | |
Pulse | 50mg/L, seed treatment | |
Cucumber/water melon | 10-50mg/L, spray on fruits before harvest | Prolong fruit storage; delay fruit senescence |
Orange | 5-20mg/L, spray on fruits before fruit coloring | |
Banana | 10mg/L, fruit treatment after harvest | |
Cherry | 10mg/L, spray on fruits at 20d before harvest |