Technical Data Sheet
Gibberellic Acid
Main Information
Physical & Chemical Properties
White powder, hard to dissolve in water、ether、benzene、chloroform, can dissolve in methanol, ethanol, acetone etc. It can decomposition easily when meet alkaline and become deep red when meet sulfuric acid.
Function
Gibberellins Acid (GA3) is a kind of broad spectrum low toxicity plant grow regulator, it existed ubiquitous in plant as five of inner element.
u Promote cell division and growth.
Gibberellic acid can induce the birth and activity of expansion, increase the activity of XET, promote the microtubules and cell long axis are arranged vertically, accelerate the increase of cell amount, make the extend cell division and growth.
u Break the dormancy of seed, increase the activity of seed and rate of germination.
Gibberellic acid can play the function through two ways of promote seed germination: one is promoting embryo production, GA is the necessary condition for copy of DNA; second substantial production and can improve the hydrolysis of endosperm cell wall hydrolysis enzyme activity. During the graminoid plant seed germination, aleurone layer of cells can be induced by GA in the alpha amylase, protease and nuclease enzyme synthesis, it can offer the energy and base fertilizer for seed germination.
u Accelerate the flower bud differentiation, affect flower bloom, reduce the fallen of flower and fruits.
Gibberellic acid is a kind of flower bloom signal molecule. Spray the GA can promote the plant bloom in day in the low temperature, GA3 promote the flower bloom through GA and DNA. Gibberrellic acid can promote cells, fructan, and starch hydrolysis of sucrose into glucose and fructose, provide the energy needed to grow through breath. Improve the plasticity of the cell wall and reduce cell water potential, indirect play the role of hydrophobic flower thinning. GA can promote the auxin content increase, the high level auxin lead to the birth of Ethephon, speed up the senile of flower, then play the function of fruit thinning.
Applications for Crops
1. Single use: GA3 can be made DC、EC、DP etc, spray dosage is 30-50 mg/L, and is used to break seed dormancy, Improve vegetative growth and fruit bearing, relieve senescence and keep fresh.
2. Compound with other regulators: GA3 can be compounded with auxin and phytokinin to promote fruit bearing and increase yield、quality.
The Usage and Dosage of GA3 Used on Different Crops | |||
Crops | Dosage (mg/L) | Method of use | Effects |
Cotton | 20 | Seed soaking 6-8h | Improve seeds sprouting and reduce rotten seeds because of low temperature or other bad circumstances . |
Soybean | 3.5 | Seed soaking 6-12h | Increase seeds sprouting speed and rootlet growth speed, increase root fresh weight and dry weight. |
Strawberry | 5-10 | Improve growth and become ripe in advance. | |
Peony | 500-800 | Use absorbent cotton parceling blossom bud, the absorbent cotton contains GA3 | Improve sprouting to achieve flowering in advance |
Eggplant | 50-100 | Seed soaking 8h | Break seed dormancy and increase seeds germination rate |
Asparagus lettuce | 200 | Seed soaking 24h | Break seed dormancy, early germination |
Potato | 5-15 | Seed soaking 30min | early germination and quicken budlet growth speed |
Tomato, Eggplant, pepper | 25-40 | Spray flowers once in florescence | Prevent flower drop, increase fruit bearing rate and yield |
Watermelon, cucumber, white gourd | 20-50 | Spray flowers once in florescence or Spray young fruit once | Improve young fruit growth and increase yield |
Grape | 100-200 | Spray young grape after full-bloom stage | Increase fruit bearing rate obviously, yield-increasing by 50.3% perunit area. |
Orange | 50 | Foliage http://cn.bing.com/dict/clientsearch?mkt=zh-CN&setLang=zh&form=BDVEHC&ClientVer=BDDTV3.5.0.4311&q=%E5%8F%B6%E9%9D%A2%E5%96%B7%E6%96%BDspray between the first physiological drop or 7 days later flower faded and the second fruit drop stage | Flower and fruit retention. |
Lychee | 20 | Spray one time after flower faded 30 days | Reduce fruit drop, increase fruit size and yield |
Mango | 20-100 | Spray once respectively after flower faded and young fruit stage | Increase fruit bearing rate obviously. |
Apple | 10 | Spray in florescence | Increase fruit bearing rate |
Pear | 20-50 | Spray in sprouting stage or full-bloom stage | Increase fruit bearing rate and yield |
Watermelon, cucumber | 25-35 | Spray one time before harvest | Prolong the storage time |
Garlic sprout | 40-50 | Soaking basal of plant 10-30min | Inhabit organicmattertransport upward, then can retainfreshness. |
Wheat | 10-50 | Spray once respectively in recovering stage and jointing stage | Reduce unavailabletiller and improve percentage ofearbearingtiller, increase 1000-grain weight, |
Celery | 40-60 | Spray whole plant 15-30 days before harvest | Spray two times every 3-4 days can make stems and leaves bigger,yield-increasing. |
| 20 | Plant height 10cm or 3 days after reap spray one time | Yield-increasing by 15 or more |
Tobacco | 15 | Spray one time in big seedling stage | Increase the content of nicotine and potassium, better quality, increase yield by 20% |
Sugercane | 40-50 | Spray the whole plant between the end of tilling stage and jointing stage | Better quality and increase yield |
Formulation Technology
(1) CPPU·GA3
Form: 1.6% SL or EC (CPPU 0.1% + 1.5% GA3)
Function: Prevent the cob hardening, improve fruit-set rate, promote fruit enlargement
Using Crop: Grape, loquat and all kinds of fruit trees.
(2) Brassinolide · IAA · GA3
Form: 0.136% WP (0.135% GA3 + 0.00052% IBA + 0.00031% Brassinolide)
Function: Promote the growth of the root, accelerate the plant potency, solve the yellow leaves, rot root, fruit cracking caused by the micro element, induce the plant increase the stress of resistance, disease and insect-resistance, to alleviate phytotoxicity, increase the output and improve the quality.
Using Crop: Wheat, Vegetable and Fruit trees.
Form: 3.2% WP (1.6% Paclobutrazol + 1.6% GA3)
Function: Inhibition of rice prosperous growing, Adjusting the grain-filing, lower immature millet and increase each rice weight, also can improve rice quality, Enhance anti-reversibility of rice, rice plant senescence.
Using Crop: Rice.
Form: 10% WP (9.6% DA-6 + 0.4% GA3)
Function: To promote crop growth, increase production.
Form: 2.5% Sodium Salicylic Acid + 0.15% GA3
Function: Anti-Low Temperature, Anti Drought, Break the dormancy and promote germination, seedling’s healthy.
Using Crop: Spring Corn, rice, and winter wheat.
(6) GA3· Brassinolide
Form: 0.4% AS or SL (0.398% GA4 + 0.002% Brassinolide)
Function: Can order flowers daub, spray, spray fruit, also can spray spraying or blade.
Using Crop: All kinds of fruit trees, vegetable, Field crops.
(7) Potassium Nitrophenolate · GA3
Form: 0.25% SL (0.2% 2,4 Dinitrophenolate Potassium +1% Potassium Ortho-nitrophenolate + 1.2% Potassium Para Nitrophenolate + 0.1% GA3 )
Function: To promote crop growth and development, promote root, early flowering.
Using Crop: Chinese Cabbage.
(8) Benzylamine · GA3
Form: 3.6% EC (GA3 1.8% EC + Benzylamine 1.8% EC)
3.8% EC (GA3 1.9% EC + Benzylamine 1.9% EC)
Function: It can obvious improve apple shape and high rate of pile. Promote fruit five edge bumps. Greatly improved apple’s quality and outlook.
Using Crop: Apple.
Attention
Gibberellic Acid is easily decomposed in alkali, so please do not compound with alkali. GAwater soluber formulation can not be stored for long, in case of losing activity. Please use strictky follow the recommend dosage to avoid side effect. When use to promote fruit setting, the water and fertilizer should be adequate. If compound with some kind of plant control regulator, the effect would be better. The field that use gibberellic acid which numbers of infertile seeds increase should not apply GA. The safe inerval is 15 days. Please apply at most 3 times every crop season.
Storage
Ø Please store at cool and dry place, without exposing at strong sunshine and extra humid place.
Ø It is forbidden to transport and store together with foodstaff, seeds and other fertilizers.
Ø Avoid touching with children and livestock.
Package Style
1kg/ drum x 20 drum /carton (TC powder)
Shelf Life
2-3years
