Formulation and mother liquor preparation
The gibberellin formulation has 85% crystalline powder, 4% EC, and 10 mg tablets. Emulsifiable concentrates and tablets are readily soluble in water and can be formulated and used directly. Difficult to dissolve in water powder, soluble in alcohol, so the preparation, take 1 gram of crystalline powder, into the measuring cylinder, add a small amount of alcohol or high concentration of liquor dissolved, diluted with water to 1000 ml, Serve 1000 mg / kg of mother liquor . Do not heat at the time of dispensing. The temperature of the water must not exceed 50°C. Use the mother liquid according to the required concentration.
Application on vegetables
Anti-aging and preservation: Cucumber and watermelon before harvesting, 25-35 mg/kg gushing once; Garlic pods 40-50 mg/kg immersed in the base of garlic for 10-30 minutes.
Flowering and fruit preservation, promote fruit growth: tomato, eggplant, 25-35 mg/kg, flowering flowering once; pepper, 20-40 mg/kg, flowering flowering once; watermelon, 20 mg/kg, flowering period Sprinkle the flowers or spray the young larvae once.
To promote vegetative growth, mention the morning market: celery, 15-30 days before harvest, 35-50 mg/kg, spray once every 3-4 days for a total of two times; leeks, at 10 cm height or 3 days after harvest, 20 mg / kg spray; mushrooms, 400 mg / kg, dip blocks when the primordium is formed.
Inducing male flowers and increasing seed production: When cucumbers are seeded, 50-100 mg/kg gibberellin is applied to 2-6 true leaves of seedlings.
Promote bolting and flowering and increase breeding coefficient of improved varieties: Spraying plants or dropping growth points with 50-500 mg/kg gibberellin can make carrots, kale, radish, celery, Chinese cabbage and other two-year growing sunshine crops before wintering Under short-day conditions convulsions.
Breaking Dormancy: Soaking seeds with 200 mg/kg gibberellic acid for 24 hours at a temperature of 30°C to 40°C can break the dormancy of lettuce seeds. This method is more convenient than the folk deep-well hanging method, and is stable in germination; it breaks the dormancy of potato tubers. 0.5-2 mg/kg gibberellic acid solution was immersed in potato for 10-15 minutes, or 5-15 mg/kg soaked in whole potato for 30 minutes; breaking the strawberry plant's dormancy was promoted in the strawberry greenhouse to promote cultivation and semi-promoting cultivation. Three days after the shed was kept warm, when the buds appeared more than 30%, each sprayed 5-10 mg/kg gibberellin solution 5 ml, and the key sprayed leaves could make the top inflorescence bloom ahead of time, promote growth, and mature earlier.
Is an antagonist of paclobutrazol, chlormequat and other inhibitors: tomato damage caused by excessive use of anti-dropping agent, can be used 20 mg / kg gibberellin release.
Precautions
1. Can not be mixed with alkaline substances, but can be mixed with acidic, neutral fertilizers and pesticides, mixed with urea to increase production better. The aqueous solution is easily decomposed and should not be released for a long time. 2. The use of gibberellin can only produce good results under conditions of sufficient supply of fertilizer and water, and it cannot replace fertilizer. 3. Must grasp the appropriate application concentration and application period, the concentration is too high will appear long, white, until the deformity or withered, the concentration is too low, the effect is not obvious. Generally, the fluid volume per acre is not less than 50 kg.
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