Introduction
Gibberellin GA3 is the most widely used plant growth regulator in agriculture, forestry and horticulture in China. The physiological functions of gibberellin GA3 mainly include: changing the proportion of female and male flowers in some crops, inducing parthenocarpy, accelerating fruit growth and promoting fruit setting; Breaking seed dormancy, early seed germination, accelerating stem elongation and mossing of some crops; Enlarging the leaf area and accelerating the growth of young branches are conducive to the accumulation of metabolites in phloem and activate cambium; Inhibit maturation and senescence, control lateral bud dormancy and tuber formation.| Product name | GA3 |
| Other names | Ralex, Activol, Gibberelic acid, GIBBEX, etc |
| Formulation and dosage | 90%TC, 10%TB, 10%SP, 20%SP |
| CAS No. | 77-06-5 |
| Molecular formula | C19H22O6 |
| Type | Plant growth regulator |
| Toxicity | Low toxic |
| Shelf life | 2-3 years proper storage |
| sample | Free sample available |
| Mixed formulations | GA3 1.6%+ paclobutrazol 1.6% WPForchlorfenuron 0.1%+gibberellic acid 1.5% SLgibberellic acid 0.4%+ forchlorfenuron 0.1% SL |
| Place of origin | Hebei, China |
Application
2.1 To get what effect? The most prominent function of gibberellin is to accelerate cell elongation (gibberellin can increase the content of auxin in plants, and auxin directly regulates cell elongation). It also promotes cell division. It can promote cell expansion (but does not cause acidification of cell wall). In addition, gibberellin can inhibit maturation, lateral bud dormancy and aging, Physiological function of tuber formation 2.2 To be used on what crops? Gibberellin is suitable for the following crops: cotton, tomato, potato, fruit tree, rice, wheat, soybean and tobacco to promote their growth, germination, flowering and fruiting; It can stimulate fruit growth, improve seed setting rate, and have significant yield increasing effect on cotton, vegetables, melons and fruits, rice, green fertilizer, etc. 2.3 Dosage and usage| Formulations | Crop names | Control object | Dosage | Usage Method |
| 10% TB | rice | Regulate growth | 150-225 g/ha | Leaf spray |
| celery | Regulate growth | 1500-2000 times liquid | spray | |
| 10% SP | celery | Regulate growth | 900-1000 times liquid | spray |
| Citrus tree | Regulate growth | 5000-7500 times liquid | spray | |
| 20% SP | rice | Regulate growth | 300-450 g/ha | Steam and leaf spray |
| grapes | Regulate growth | 30000-37000 times liquid (pre anthesis); 10000-13000 times liquid (after anthesis) | spray | |
| poplar | Inhibit flower bud formation | 1.5-2 g/hole | Injection trunk |