How to use gibberellin

Gibberellin, commonly known as 920, is a broad-spectrum plant growth regulator. It is widely used to promote cell elongation, accelerate plant growth and development, improve product yield and improve product quality, and promote Plants mature early; can also break the dormancy of some vegetable seeds (such as potatoes, peas, etc.) and promote germination; can also change the ratio of male flowers and female flowers of melon vegetables, prevent flowers from falling off, improve the rate of results, and form seedless fruits; It can also promote the expansion of leaves of some leafy vegetables (such as spinach and leeks).
Specific usage: First, improve the fruit setting rate of cucumber, eggplant and tomato: spray 4 times of gibberellin emulsifiable concentrate 800 times in flowering stage. Second, make celery, spinach, loose leaf lettuce leaves: 20 days before harvest, with 4% gibberellin emulsifiable concentrate 4000 times liquid foliar spray, spray again every 5 days (this is the most cultivated by the current growers) A common usage). Third, promote the germination of potatoes, peas, and lentils: soak seeds for 4 hours with 4% gibberellin emulsifiable concentrate 800 times. After the fish is removed (due to cutting wounds, the potatoes need to be disinfected with grass ash or other chemicals). Fourth, promote cucumber and watermelon to open more female flowers: in the 1 leaf stage of cucumber, use 4% gibberellin EC 500 times liquid foliar spray, in the 2-3 leaf stage of watermelon, use 4% gibberellin EC 8000 Double liquid leaf spray. 5. In addition, the use of 4% gibberellin EC 2000-4000 times before the watermelon harvest, can also effectively extend the storage period of watermelon.
Pay attention when using gibberellin: firstly, the concentration should be accurate (must see the instructions. The above concentration is 4% gibberellin EC, there are other dosage forms and other concentrations in the production, so it can not be the same, the following introduction The same is true for other types of plant growth regulators. Excessive concentrations tend to cause plants to lose their green color and even die, and they are also prone to malformation. Pure gibberellin is difficult to dissolve in water. It can be dissolved first with alcohol or high concentration of shochu. Add water to the required concentration. Never use hot water above 50 °C to exchange the solution. Use it immediately after using the solution. Long-term storage is prone to failure. Source: Sichuan Rural Daily
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