Most people engaged in agricultural cultivation are familiar with gibberellin. Basically, gibberellin is indispensable in the regulation of crop growth and development. However, different crops use different amounts of gibberellin. Let's learn how to use gibberellin to increase production in 20 crops such as lettuce, eggplant, pepper and tomato?
1. Lettuce
Lettuce seeds in 200mgL concentration of gibberellin solution, 30~38 ℃ high temperature soaking seeds for 24 hours, can smoothly break the dormancy, early germination.
2 The Potato
Potato cubes are soaked with 0.5-2mg/L gibberellin solution for 10-15 minutes, or with 5-15 mg/L gibberellin solution for 30 minutes, which can relieve the dormancy period of potato tubers, sprout early, and promote lateral buds, accelerate the growth of young buds, early occurrence of stolons, and prolong the swelling period of tubers. Varieties with short dormancy periods use lower concentrations, while those with long dormancy periods use higher concentrations.
3, Apple.
Spraying 2000~4000mg/L gibberellin solution in early spring can break the dormancy of apple buds, and the effect is remarkable.
4 Strawberries
It can break the dormancy of strawberry plants. In the facilitated cultivation and semi-facilitated cultivation of strawberry greenhouses, it can be carried out after covering the greenhouses for 3 days, I .e. when more than 30% of flower buds appear. Each plant is sprayed with 5mL of gibberellin liquid medicine with a concentration of 5~10mg/L, and the heart leaves are mainly sprayed, which can make the top inflorescences bloom in advance, promote growth and mature in advance.
5. Eggplant

The low concentration of gibberellin solution can break the shallow dormancy of eggplant seeds and lift up the germination potential and germination rate of the seeds. For moderately dormant eggplant varieties, hormones must be applied to break seed dormancy regardless of germination test or seedling raising. It is recommended that the concentration of 500mg/L be treated for 24 hours. Spraying flowers once at the flowering stage with a concentration of 25-35mg/L gibberellin solution can prevent falling flowers, promote fruit setting and increase yield.
6. Soybean
Soaking seeds with 3.5 mg/L gibberellin solution can effectively accelerate the initial germination rate of spring sowing soybean at 10~15 ℃, significantly accelerate the growth rate of young roots, and increase the fresh weight and dry weight of young roots.
7, sweet potato
Immerse potato pieces in 10~15mg/L gibberellin liquid medicine dilution for 10 minutes, take them out and dry them, then raise seedlings in hotbed, which can break the dormant period, emerge early, save seed amount and strive for seasons.
8. Sorghum
Soaking seeds with 5-10mg/L gibberellin solution can promote germination, stimulate hypocotyl elongation and increase dry weight, and significantly early emergence.
9. Camellia oleifera
With 20mg/L concentration of gibberellin solution, soaking 4 hours, can accelerate the speed of germination.
10. Cotton
With 20mg/L concentration of gibberellin liquid medicine, soaking seeds for 6~8 hours, can reduce the low temperature and other adversity delay germination or cause rotten seeds, promote cottonseed germination.
11 the grapes.
From 5 days before flowering to the beginning of flowering, dipping the ear with 60mg/L gibberellin can significantly improve the fruit setting rate of grapes, and dipping the ear with gibberellin 100-150mg/L and 100mg/L twice during 11-14 days of full flowering and 10 days after full flowering can prevent falling flowers and fruits.
12, Tomato
Spraying flowers once at the flowering stage with a concentration of 30-35 mg/L gibberellin solution can increase the fruit setting rate and prevent hollow fruit.
13. Citrus
Spray gibberellin with a concentration of 50mg/L once after the first early physiological fruit drop, or spray gibberellin with a concentration of 50mg/L once 7 days after flowering and after the first early physiological fruit drop to before the second physiological fruit drop. In the case of high temperature and drought in the flower and fruit period, the use of gibberellin should be combined with proper watering of the orchard. When spraying, adding 0.2% urea, 0.2% phosphorus and potassium source pool and 0.2% borax to the gibberellin solution can improve the effect of flower and fruit preservation.
14. Kiwi
The concentration of 2% gibberellin lanolin coated pedicel, can significantly reduce the number of seeds of kiwifruit, induced the formation of seedless fruit, and can reduce the rate of fruit drop.
15, chili.
Spraying flowers once with a concentration of 20~40mg/L gibberellin can promote fruit setting and increase production.
16, watermelon
With 20~50mg/L concentration of gibberellin flowering spraying once, or young melon spraying once, can promote the growth of young melon, yield.
17, wax gourd
With 20~50mg/L concentration of gibberellin flowering spraying once, or young melon spraying once, can promote the growth of young melon, yield.
18. Pumpkin
With 20~50mg/L concentration of gibberellin flowering spraying once, or young melon spraying once, can promote the growth of young melon, yield.
19. Cucumber
With 20~50mg/L concentration of gibberellin flowering spraying once, or young melon spraying once, can promote the growth of young melon, yield.
20, rape
Before rape transplanting, 20mg/L concentration of gibberellin solution was dipped in the roots to promote early onset and increase yield. Spraying 25mg/L gibberellic acid on the leaves at the full flowering stage can improve the seed setting rate of rapeseed.
In general, gibberellin can not only promote the growth of crop stems and leaves, but also play a significant role in improving its stress resistance and germination rate. However, farmers need to pay attention to the fact that plant growth hormones such as gibberellin can only play an effective role when the supply of fertilizer and water is good, and cannot replace fertilizer. If you want to increase production, Z should be mixed with urea.