Sodium nitrophenolate is a broad-spectrum plant growth regulator that integrates nutrition, regulation and prevention. It can be used throughout the life cycle of plants.
As a powerful cell activator, sodium nitrophenolate can quickly penetrate into the plant body after contact with crops, promote the flow of cell protoplasm, improve cell vitality, and have obvious effects in promoting growth, increasing yield and improving quality.
1. About sodium nitrophenolate
(1) Chemical composition and physical and chemical properties
①5-nitroguaiacol sodium: It is an odorless orange-red flaky crystal, easily soluble in water, and soluble in organic solvents such as methanol, ethanol, and acetone.
②O-nitrophenol sodium: It is a red needle-shaped crystal with a special aromatic hydrocarbon smell, easily soluble in water, and soluble in organic solvents such as methanol, ethanol, and acetone.
③P-nitrophenol sodium: It is an odorless yellow crystal, odorless, easily soluble in water, and soluble in organic solvents such as methanol, ethanol, and acetone.
The above substances are stable under normal storage conditions. After being prepared in a certain ratio (1:2:3), sodium nitrophenolate with the appearance of red and yellow mixed crystals is formed.
Main dosage forms: 0.7%, 0.9%, 1.4%, 1.8%, 2% aqueous solution; 0.9% wettable powder.
(2) Functional characteristics
Safety: Sodium nitrophenolate and its preparations are designated by the Food and Agriculture Organization (FAO) as recommended plant growth regulators for green food engineering.
Broad spectrum: Sodium nitrophenolate can be widely used in food crops, cash crops, oil crops, animal husbandry, fishery, etc.
Low cost: Sodium nitrophenolate has the characteristics of small dosage, low cost, significant effect and obvious benefits.
Synergistic effect: Adding a small amount of sodium nitrophenolate to fertilizers, pesticides and herbicides can not only improve the fertilizer efficiency, drug efficacy and weed control effect, but also eliminate antagonism, and has a high safety factor for crops.
2. The powerful effect of sodium nitrophenolate
(1) Eliminating the antagonism between multiple fertilizers
Generally speaking, applying multiple organic and inorganic fertilizers to plants will produce antagonism, which is not conducive to the plant's absorption of fertilizers and causes nutrient waste.
However, if multiple micro-fertilizers are used in combination with sodium nitrophenolate, the antagonism between fertilizers can be eliminated, allowing multiple fertilizers to be assimilated and absorbed by plants, which can improve fertilizer utilization.
(2) Improving the plant's fertilizer demand
Sodium nitrophenolate can fully mobilize and exert the plant's active fertilizer and water absorption activity, which is mainly manifested in: ① Improving root activity and increasing the root's absorption of multiple nutrients; ② Enhancing the activity of ATPase, generating a large amount of ATP energy quanta, and providing plants with absorbable energy for nutrients; ③ Increasing the permeability of the protoplasmic membrane and improving the absorption and transport of plant nutrients.
(3) Synergistic effect on foliar fertilization
① Sodium nitrophenolate can increase the permeability of the leaf cuticle, improve the penetration rate of nutrients and the fertilizer utilization rate of foliar fertilization; ② Sodium nitrophenolate can increase the respiration of leaves, expand stomata, allow fertilizer to enter the stomata more and faster, and improve fertilizer efficiency; ③ Sodium nitrophenolate can promote the expansion, enlargement and thickening of plant leaves, increase the contact surface of leaves with nutrients, and the larger the contact surface, the higher the absorption rate of nutrients by leaves.
(4) Synergistic effect on fungicides
① Sodium nitrophenolate can enhance plant immunity, reduce the infection of pathogens, and significantly enhance the fungicide's efficacy; ② Sodium nitrophenolate can increase the permeability of the plasma membrane, making it easier for fungicides to kill pathogens and enhancing the efficacy of the drug; ③ Sodium nitrophenolate can enhance the affinity between fungicides and pathogens and enhance the fungicide's efficacy; ④ Sodium nitrophenolate can block the energy metabolism and material metabolism of pathogens and improve the fungicide's efficacy.
3. Sodium nitrophenolate usage technology
(1) Usage
Sodium nitrophenolate is a highly effective plant growth regulator that combines nutrition, regulation and disease prevention. It is available in aqueous and powder form and can be used at any stage of the crop's life cycle.
① Food crops
Seed soaking: Soak rice, wheat, corn and other seeds in 1.8% sodium nitrophenolate 6000 times solution for 12 hours and then dry in the shade before sowing. This can increase the seed germination rate and achieve strong buds, thick roots, and strong seedlings.
Seedling stage: 7 days before transplanting (or during the greening period of direct seeding), the seedlings are sprayed with 3000~6000 times of 1.8% sodium nitrophenolate on the leaves, which can significantly improve the quality of the seedlings, make the seedlings grow early and fast, shorten the greening period, promote growth and tillering, and improve disease resistance and stress resistance.
Growth period: Rice, corn, wheat, etc. are sprayed with 3000 times of 1.8% sodium nitrophenolate on the stems and leaves once during the young spike formation period, heading and flowering period, and filling period. It can accelerate the differentiation process of young spikes, promote heading, shorten the heading period, promote the conversion of photosynthetic products to carbohydrates, accelerate the synthesis of amino acids, accelerate the accumulation of starch and protein, and promote early maturity.
② Vegetables
Seed soaking: Most vegetable seeds can be soaked in 6000 times solution for 8~24 hours, dried in the dark and sown.
Seedling stage: Spray 1.8% sodium nitrophenolate 6000 times solution once a week during the germination period of vegetable seeds to prevent seedlings from growing too tall and achieve the goal of full seedlings and strong seedlings. Spray sodium nitrophenolate 6000 times solution 2~3 times a month to promote vegetative growth and flower bud differentiation, and prevent seedlings from growing too tall and aging.
Antifreeze: Spray sodium nitrophenolate 5000 times solution once before the cold wave arrives during the seedling stage of vegetables to effectively prevent the occurrence of frost damage; after the vegetables are frozen, quickly spray sodium nitrophenolate 4000 times solution 2~3 times to eliminate or alleviate frost damage.
Growth period: During the growth period after greenhouse vegetables are transplanted, watering with 6000 times solution (or mixed with liquid fertilizer) is effective in preventing root aging and promoting new root formation; fruits and vegetables, such as tomatoes, peppers, melons, etc., are sprayed with 6000 times solution 1~2 times during the growth period and bud period, with an interval of about 7 days; when beans and cowpeas have 4 true leaves, spray the leaves with 6000 times sodium nitrophenolate solution to accelerate the growth of seedlings and advance the vines 4~7 days in advance; spray the leaves with 6000 times solution during the initial and peak flowering periods to protect flowers and pods; spray the leaves during the peak harvest period to promote the early growth of new leaves and shoots, and can return to flowers 5~7 days in advance. During the rosette period of Chinese cabbage, spray 1~2 times with 6000 times sodium nitrophenolate solution to early heart-encapsulation and increase production by more than 30%; when crops with high economic value are damaged by pesticides, they can be treated with 6000~12000 times solution several times to help restore normal growth.
③ Fruit trees
Sodium nitrophenolate is mostly used to preserve flowers and fruits, enhance leaf vitality, and can also be used for rooting of cuttings on fruit trees. The following is a brief introduction to the dosage and period.
For pears, peaches, citrus, oranges, and lychees, dilute 1500~2000 times, and spray 1~2 times after new germination, 20 days before flowering, before flowering, and in the early fruiting period.
For grapes, plums, persimmons, plums, longans, papayas, guavas, lemons, etc., dilute to 5000~6000 times, and spray 1~2 times after new germination, 20 days before flowering, before flowering, and in the early fruiting period.
For sugarcane, dilute 2500~8000 times, soak the seedlings with 8000 times of liquid for 8 hours during the seedling transplanting period, and spray the stems and leaves with 2500 times of liquid during the tillering period.
For bananas, dilute 1500~2000 times, and spray once during the bud stage and after the bud break period.
(2) Compounding
① Compounding with fertilizers: can enhance plant absorption of nutrients, and the effect is fast. At the same time, it can alleviate element antagonism, fertilizer shelving problems and inorganic fertilizer aversion, and double the fertilizer effect. The reference dosage is 2~5‰.
② Compounding with flushing fertilizer: can make the crop root system developed, the leaves thick, dark green and shiny, the stems thick and strong, the fruits swollen, the growth rate fast, and the color bright. The reference dosage is 1~2‰.
③ Compounding with fungicides: can enhance plant immunity, reduce pathogen infection, and enhance plant disease resistance. Compounding with fungicides can increase the fungicide function, improve the efficacy and lasting effect, and reduce the dosage. The reference dosage is 2~5‰.
④ Compounding with insecticides: can be used in combination with most insecticides, can broaden the drug spectrum, enhance the efficacy, reduce the possibility of pesticide damage during use, and enable the damaged plants to quickly resume growth. The reference dosage is 2~5‰.
⑤ Combined with seed dressing agent: It can still play a regulatory role at low temperatures, shorten the dormancy period of seeds, promote cell division, induce rooting and germination, and resist the invasion of pathogens. The reference dosage is 1‰.
(3) Note
① Strictly control the concentration used. If the concentration is too high, pesticide damage may occur, mainly manifested as inhibiting crop growth.
② When treating stems and leaves, spray evenly. For crops with thick waxy layers on the surface that are not easy to adhere to drug drops, the agent should be added before spraying.
③ It can be mixed with general pesticides, but it should not be mixed with strong acid pesticides. When mixing, take a small part of the pesticide and dissolve it in water, and then slowly pour it into the sodium nitrophenolate solution. If no precipitate is found in the sodium nitrophenolate solution and the solution still remains brown-red, this pesticide can be mixed with sodium nitrophenolate.
